Use simple additive strategies with whole numbers and fractions

Use simple additive strategies with whole numbers and fractions

1. Changing Numbers: 27 to 29
2. Changing Numbers: 90 to 85
3. 5 less, 5 more than 80
4. 5 less, 5 more than 30
5. Changing Numbers: 85 to 80
6. Changing Numbers: 45 to 50
7. Changing Numbers: 85 to 80
8. Changing Numbers: 48 to 50
9. Back to School: 5c + 15c + 7 c
10. Make 20: 7+4+?
11. Make 20: 11+5+?
12. Make 20: 8+9+?
13. Add these 3 numbers: 14 + 5 + 2
14. Add these 3 numbers: 11 + 4 + 5
15. Add these 3 numbers: 9+10+4
16. Add these 3 numbers: 13 + 7 + 6
17. Number Detectives: 10 + ? = 34
18. 100 Grid: Start at 15. Add 7
19. 100 Grid: Start at 28. Add 8
20. 100 Grid: Start at 14. What is 11 more?
21. 100 grid: 11 more than 33
22. 100 grid: Find 9 more than 27
23. True or False?: 21 + 4 = 25
24. True or False?: 26 + 3 = 29
25. True or False?: 22 + 6 = 28
26. Make 50: 20+10+?
27. Make 50: 20+10+?
28. Make 50: 20+10+?
29. Make 50: 20+10+?
30. Make 50: 20+10+?
31. Adding tens: 26 + ? = 36
32. Adding tens: 46 + ? = 56
33. Adding tens: 64 + ? = 94
34. Adding tens: 38 + 20 = ?
35. Adding tens: 56 + 30 = ?
36. Adding tens: ?+ 36 = 66
37. Adding tens: ?+ 73 = 83
38. Adding tens: ?+ 46 = 86
39. Now Add This! 34+11, 34+12
40. Now Add This! 19+20, 19+24
41. Now Add This! 26+21, 26+31
42. Now Add This! 52+20, 52+17
43. Now Add This! 33+19, 33+21
44. Addition Chains
45. Changing numbers 136 to 140
46. Changing numbers 122 to 130
47. Changing numbers 154 to 160
48. Changing numbers 188 to 190
49. Changing numbers 177 to 180
50. Add three numbers: 4 + 8 + 7
51. Add three numbers: 6 + 7 + 9
52. Add three numbers: 14 + 7 + 3
53. Add three numbers: 10 + 12 + 8
54. Add three numbers: 13 + 9 + 7
55. Add three numbers: 20 + 10 + 20
56. 40s zone: Add on 5 to 36.
57. 40s zone: 4 more than 38
58. 40s zone: 37 plus 5
59. 40s zone: 4 more than 39
60. 40s zone: Add on 3 to 38
61. 50s zone: Add on 5 to 47.
62. 50s zone: 49 plus 3
63. 50s zone: 48 plus 5
64. 50s zone: 4 more than 47
65. 50s zone: 5 more than 46
66. Bob's and Kai-ling's teams $16 + $7 = $?
67. True or False?: 42 + 7 = 49
68. Same or Different: Click all the boxes with the answer 25.
69. Same or Different: Click all the boxes with the answer 37.
70. Same or Different: Click all the boxes with the answer 34.
71. Same or Different: Click all the boxes with the answer 26.
72. Same or Different: Click all the boxes with the answer 28.
73. Make 30: 10 + 11 + ? = 30
74. Make 50: 20+10+?
75. Make 30: 19 + 2 + ? = 30
76. Make 30: 20 + 10 + ? = 30
77. Make 30: 16 + 4 + ? = 30
78. Make 30: 20 + 7 + ? = 30
79. Make 30: 18 + 3 + ? = 30
80. 100 grid: Start at 73. Add 7.
81. 100 grid: Start at 45. Add 8.
82. 100 grid: Start at 26. Add 5.
83. 100 grid: Start at 68. Add 4.
84. 100 grid: Start at 52. Add 7.
85. Adding tens: 120 + ? = 140; 120 + 50 = ?
86. Adding tens: 24 + ? = 64, 24 + 50 = ?
87. Adding tens: 145 + ? = 155, 145 + 30 = ?
88. Adding tens: 57 + ? = 97, 57 + 20 = ?
89. Adding tens: 138 + ? = 178, 178 + 20 = ?
90. Three Up!: Add 3 to 60, 20, 50
91. Two Up!!: Add 2 to 23, 15, 37
92. Two Up!!: Add 2 to 29, 80, 12
93. Two Up!!: Add 2 to 14, 24, 44
94. One Up!: Add 1 to 65, 19, 42
95. Changing numbers: 24 changes to 33
96. Changing numbers: 19 changes to 28
97. Number Detectives: ? + 7 = 30
98. Number Detectives: ? + 24 = 30
99. Number Detectives: 24 + 6 = ?
100. Number Detectives: 5 + 25 = ?
101. Number Detectives: 22 + ? = 30
102. Number Detectives: 21 + ? = 30
103. Use the pattern: 2+4, 12+4, 120 + 40
104. Use the pattern: 4+1, 14+1, 140+10
105. Use The Pattern: 4+3, 14+3, 140+30
106. Use The Pattern: 2+7, 12+7, 120+70
107. Use The Pattern: 5+4, 15+4, 150+40
108. Use The Pattern: 3+6, 13+6, 130+60
109. Use The Pattern: 5+3, 15+3, 150+30
110. Make 50: 40 + 4 + ?
111. Make 36: 20 + 14 + ?
112. Make 39: 30 + 6 + ?
113. Make 37: 12 + 20 + 5
114. Make 34: 10 + 22 + ?
115. Beyond 20: What is 6 more than 29?
116. Beyond 50: What is 4 more than 57?
117. Beyond 70: What is 8 more than 78?
118. Beyond 30: What is 4 more than 38?
119. Beyond 60: What is 5 more than 68?
120. Number detectives: 30+?, 50+?, 60+? =100
121. Number detectives: 80+?, 90+?, 40+?=100
122. Number detectives: 10+?, 70+?, 50+?=100
123. Number detectives: 25+?, 35+?, 55+? =100
124. Number detectives: 5+?, 45+?, 15+?=100
125. Add on tens: Add 10, 20 to 35
126. Add on tens: Add 10, 20 to 16.
127. Add on tens: Add 10, 20 to 36
128. Thinking in tens: Add 10, 19 to 19
129. Thinking in tens: Add 10, 11 to 14
130. Add three numbers: 2 + 13 + 9
131. Add three numbers: 15 + 7 + 8
132. Add three numbers: 14 + 12 + 8
133. Add three numbers: 17 + 7 + 12
134. Add three numbers: 11 + 14 + 5
135. Number detectives: ? + 9 = 49
136. Number detectives: ? + 11 = 53
137. Crossing 100: 4 more than 99
138. Crossing 100: 7 more than 97
139. Crossing 100: 8 more than 98
140. Crossing 100: 9 more than 92
141. Crossing 100: 5 more than 97
142. True or False: 12+14=26
143. True or False: 12+12=24
144. True or False: 15+12=27
145. Number detectives: 22+9 = ?
146. Number detectives: 51+11 = ?
147. Number detectives: 35+? = 46
148. Same or Different: Click all the boxes with the answer 50.
149. Same or Different: Click all the boxes with the answer 46.
150. Same or Different: Click all the boxes with the answer 32.
151. Same or Different: Click all the boxes with the answer 45.
152. Same or Different: Click all the boxes with the answer 38.
153. Make 50: 39+7+? = 50
154. Make 50: 39+5+? = 50
155. Make 50: 35+5+? = 50
156. Make 50: 38+10+? = 50
157. Make 50: 42+6+? = 50
158. Beyond 40: 6 more than 45
159. Beyond 70: 5 more than 79
160. Beyond 60: 8 more than 68
161. Beyond 50: 7 more than 58
162. Beyond 70: 9 more than 72
163. N/D Mysteries of 40! 34+? 30+? 38+?=40
164. N/D Mysteries of 40! 31+? 36+? 30+?=40
165. N/D Mysteries of 40! 33+? 37+? 32+?=40
166. N/D Mysteries of 40! 32+? 39+? 34+?=40
167. N/D Mysteries of 40! 31+? 35+? 37+?=40
168. 100 Zone: 70 + 40 = ? 90 + ? = 110, ? + 80 = 110
169. 100 Zone: 60 + 80 = ? 90 + ? = 140, ? + 100 = 140
170. 100 Zone: 70 + 80 = ? 100 + ? = 150, ? + 70 = 150
171. 100 Zone: 90 + 70 = ? 80 + ? = 160, ? + 60 = 160
172. 100 Zone: 95+7=? 101-?=99 ?+6=103
173. 100 Zone: 95+6=? 103-?=99 ?+6=104
174. 100 Zone: 98+7=? 105-?=98 ?+6=105
175. 100 Zone: 98+6=? 102-?=98 ?+5=103
176. 100 Zone: 98+3=? 101-?=97 ?+5=102
177. Changing Numbers 29 to 34
178. Changing Numbers 67 to 78
179. Changing Numbers 98 to 101
180. Changing Numbers 87 to 92
181. Changing Numbers 59 to 63
182. Changing Numbers 96 to 101
183. Changing Numbers 98 to 105
184. Changing Numbers 97 to 103
185. Changing Numbers 97 to 102
186. Changing Numbers 99 to 103
187. Changing Numbers 42 to 62
188. Changing Numbers 63 to 93
189. Changing Numbers 14 to 54
190. Changing Numbers 137 to 157
191. Changing Numbers 35 to 85
192. Number detectives *+109 = 113
193. Number detectives *+4 = 103
194. Number detectives *+5 = 103
195. Number detectives 235+6 = *
196. Number detectives 98+7=*
197. Number detectives 485+*= 493
198. Number detectives 515+*= 523
199. Number detectives 95+*=101
200. Number detectives 97+*=103
201. Use The Pattern 3+5 30+50 300+500
202. Use The Pattern 3+6 30+60 600+300
203. Use The Pattern 2+4 20+40 200+400
204. Use The Pattern 3+2 30+20 200+300
205. Use The Pattern 6+2 60+20 600+200
206. Make 200: 130+50+*
207. Make 200: 70+100+*
208. Make 200: 60+40+*
209. Make 200: 90+30+*
210. Make 200: 150+40+*
211. The 1 Family - Add 1, add 11 to 35
212. The 1 Family - Add 1, add 11 to 27
213. The 1 Family - Add 1, add 11 to 49
214. The 1 Family - Add 1, add 11 to 57
215. The 1 Family - Add 1, add 11 to 83
216. Addition Chains 21 + 3 + 6 + 5, 60 + 4 + 3 + 2
217. Addition Chains 33 + 4 + 10 + 5, 28 + 3 + 9 + 8
218. Addition Chains 23 + 5 + 4 + 9, 60 + 8 + 3 + 10
219. Addition Chains 95 + 4 + 2 + 12, 94 + 3 + 3 + 7
220. Addition Chains 100 + 5 + 5 + 7, 99 + 3 + 6 + 2
221. Beyond 90: 98 + 4
222. Beyond 100: 104 + 7
223. Beyond 110: 119+3
224. Beyond 120: 128+6
225. Beyond 130: 139 + 5
226. Changing numbers: 12 + 10, +11, +111
227. Changing numbers: 28 + 10, +11, +111
228. Changing numbers: 49 + 10, +11, +111
229. Changing numbers: 88 + 10, +11, +111
230. Changing numbers: 29 + 10, +11, +111
231. Number Detectives: 100 Pairs ? + 79 = 100
232. Number Detectives: 100 Pairs ? + 51 = 100
233. Number Detectives: 100 Pairs 63 + 37 = ?
234. Number Detectives: 100 Pairs 88 + ? = 100
235. Use the pattern: 6+3, 60+30, 600+300
236. Use the pattern: 2+4, 20+40, 200+400
237. Use the pattern: 2+6, 20+60, 200+600
238. Use the pattern: 4+9, 40+90, 400+900
239. Use the pattern: 1+7, 10+70, 100+700
240. On the Board 45 + 3* = *7
241. On the Board 3* + *5 = 98
242. On the Board 4* + 42 = *9
243. On the Board 3* + 62 = *6
244. On the Board 8* + *6 = 98
245. On the Board 33 + *5 = 7*
246. On the Board *8 + 51 = 7*
247. Adding Tens 167 + * = 197
248. Add Hundreds: 600+ * = 946
249. Add Hundreds: 200+ * = 580
250. Add Hundreds: 400+ * = 963
251. Add Hundreds: 100+ * = 319
252. Add Hundreds: 300+ * = 565
253. Adding Tens: 416 + 50 = *
254. Adding Tens: 542 + 50 = *
255. Add Hundreds: 500+246
256. Add Hundreds: 300+453
257. Add Hundreds: 200+43
258. Add Hundreds: 800+163
259. Adding Tens: * + 726 = 786
260. Adding Tens: * + 314 = 394
261. Add Hundreds: * + 300 = 330
262. Add Hundreds: * + 200 = 241
263. Add Hundreds: * + 800 = 819
264. Add Hundreds: * + 300 = 345
265. Add Hundreds: * + 200 = 295
266. Number Detectives: 100 Pairs 85 + ?, 75 + ?, 45 +?= 100
267. The Nine Family: 53 + 9, + 19 + 29
268. The Nine Family: 47 + 9, + 19 + 29
269. The Nine Family: 38 + 9, + 19 + 29
270. The Nine Family: 55 + 9, + 19, + 29
271. The Nine Family: 42 + 9, + 19, + 29
272. Mysteries of 30!: 20+?, 15+?, 5+?
273. Mysteries of 30!: 19+?, 10+?, 16+?
274. Mysteries of 30!: 12+?, 13+?, 14+?
275. Mysteries of 30!: 9+?, 5+?, 7+?
276. Mysteries of 30!: 26+?, 28+?, 22+?
277. Number detectives: 102+98=?
278. Number detectives: 56+92=?
279. Number detectives: 201+99=?
280. Same or Different: Answer 62
281. Same or Different: Answer 66
282. Same or Different: Answer 73
283. Hundreds and hundreds: ?64+5?9=90?
284. Hundreds and hundreds: 364+235=?
285. Number detectives: 30+?, 20+?, 10+?=100
286. Number detectives: 60+?, 50+?, 75+?=100
287. Number detectives: 65+?, 55+?, 85+?=100
288. Number detectives: 82+?, 24+?, 76+?=100
289. Number detectives: 89+?, 21+?, 59+?=100
290. Write the missing number: 15 + 1 + ? = 20
291. Write the missing number: ? + 11 + 2 = 20
292. Write the missing number: 3 + 4 + ? = 20
293. Write the missing number: ? + 5 + 6 = 20
294. Write the missing number: 5 + 8 + ? = 20
295. Word Wise: Subtract 14 from 20
296. Word Wise: 20 take away 11
297. Word Wise: 11 less than 19
298. Word Wise: 13 less than 20
299. Write the missing number: 4 + 8 + ? = 20
300. Write the missing number: 11 + ? + 2 = 20
301. Write the missing number: ? + 13 + 4 = 20
302. Write the missing number: 6 + 9 + ? = 20
303. Write the missing number: 4 + ? + 6 = 20
304. Taking Tens: 90 - ? = 70
305. Take 10: ? - 10 = 60
306. Taking tens: 40 - 30 = ?
307. Taking tens: 50 - 20 = ?
308. Taking tens: 80 - 40 = ?
309. Taking tens: 70 - 10 = ?
310. Taking tens: 70 - 40 = ?
311. Taking tens: 40 - 30 = ?
312. Put in the missing number: 5 + 4 + ? = 16
313. Put in the missing number: 11 + ? + 6 = 25
314. Write in the missing number: ? + 13 + 5 = 21
315. Put in the missing number: 9 + 2 + ? = 19
316. Put in the missing number: ? + 10 + 14 = 28
317. True or False?: 27 - 4 = 23
318. True or False?: 25 - 5 = 20
319. Subtraction Chain - 22-4=?-3=15
320. Subtraction Chain - ?-8=16-2=14
321. Subtraction Chain - 27-20-13
322. Subtraction Chain - ?-4=21-2=19
323. Subtraction Chain - 27-4=?-6=17
324. Subtraction Chain - ?-4=19-3=16
325. Subtraction Chain - 28-7=21-5=?
326. Use the pattern: 10, 20 & 80 - 5 = ?
327. Use the pattern: 10, 20 & 40 - 3 = ?
328. Use the pattern: 10, 20 & 90 - 7 = ?
329. Use the pattern: 10, 20 & 50 - 4 = ?
330. Use the pattern: 10, 20 & 30 - 8 = ?
331. Subtract from 100: 100 - 30, 40 & 20
332. Subtract from 100: 100 - 20, 30 & 70
333. Subtract from 100: 100 - 70, 20 & 40
334. Subtract from 100: 100 - 40, 90 & 50
335. Subtract from 100: 100 - 60, 20 & 100
336. Mysteries of Fifty: 50-?=42, 50-?=45
337. Mysteries of Fifty: 50-?=48, 50-?=43
338. Mysteries of Fifty: 50-?=44, 50-?=47
339. Mysteries of Forty: 40-?=36, 40-?=31
340. Mysteries of Forty: 40-?=33, 40-?=39
341. Mysteries of Forty: 40-?=35, 40-?=38
342. Mysteries of Thirty: 30-?=29, 30-?=24
343. Mysteries of Thirty: 30-?=21, 30-?=27
344. Mysteries of Thirty: 30-?=26, 30-?=22
345. True or False?: 23 - 5 = 18
346. True or False?: 26 - 13 = 13
347. Use the pattern 16-4=? 26-3=?, 36-4=?
348. Use the pattern 14-3=? 24-3=?, 34-3=?
349. Use the pattern 15-3=? 25-3=?, 35-3=?
350. Use the pattern 18-5=? 28-5=?, 38-5=?
351. Use the pattern 16-7=? 26-7=?, 36-7=?
352. Use the pattern 13-6=? 23-6=?, 33-6=?
353. Use the pattern 11-5=? 21-5=?, 31-5=?
354. Use the pattern 12-9=? 22-9=?, 32-9=?
355. Use the pattern 19-4=? 29-4=?, 39-4=?
356. Use the pattern 17-8=? 27-8=?, 37-8=?
357. 100 grid: 41 take away 6
358. 100 grid: 53 subtract 8
359. 100 grid: 32 take away 5
360. 100 grid: 76 take away 7
361. 100 grid: 54 take away 8
362. 100 grid: 64 take away 9
363. 100 grid: 84 take away 8
364. 100 grid: 46 take away 9
365. 100 grid: 23 take away 7
366. 100 grid: 71 take away 8
367. 100 grid: 34 take away 6
368. 100 grid: 77 take away 9
369. Subtract from 30: 30 - 20, 7 & 12
370. Subtract from 30: 30 - 15, 10 & 6
371. Subtract from 30: 30 - 11, 5 & 21
372. Subtract from 30: 30 - 8, 30 & 14
373. Subtract from 30: 30 - 17, 30 & 5
374. The 9 family: Take 9, 19 & 29 from 57
375. The 9 family: Take 9, 19 & 29 from 65
376. The 9 family: Take 9, 19 & 29 from 72
377. The 9 family: Take 9, 19 & 29 from 44
378. The 9 family: Take 9, 19 & 29 from 36
379. Subtract 7 from 24, 22 & 25
380. Subtract 5 from 21, 20 & 24
381. Spot the difference between 30 and 15.
382. Spot the difference between 12 and 25.
383. Spot the difference between 30 and 10.
384. Spot the difference between 40 and 10.
385. Spot the difference between 20 and 39.
386. Spot the difference between 18 and 25.
387. Spot the difference between 25 and 34.
388. Spot the difference between 19 and 31.
389. Spot the difference between 19 and 42.
390. Spot the difference between 36 and 15.
391. Same Difference - Difference between 10 and 40.
392. Write the missing number: 20 + 3 + ? = 30
393. Write the missing number: 12 + ? + 10 = 30
394. Write the missing number: 15 + ? + 5 = 30
395. Write the missing number: 9 + ? + 12 = 30
396. Write the missing number: ? + 5 + 4 = 30
397. Write the missing number: 15 + ? + 6 = 30
398. Write the missing number: 18 + ? + 2 = 30
399. Write the missing number: 20 + 3 + ? = 30
400. Write the missing number: ? + 13 + 5 = 30
401. Write the missing number: 14 + 7 + ? = 30
402. Number detectives: ? + 23 = 30
403. Number detectives: ? + 18 = 30
404. True or False?: 30 - 8 = 22
405. True or False?: 30 - 7 = 23
406. True or False?: 12 - 2 = 15 - 5
407. True or False?: 28 - 8 = 30 - 10
408. True or False?: 15 - 5 = 30 - 20
409. True or False?: 30 - 5 = 28 - 3
410. Number detectives: 30 - 14 = ?
411. Number detectives: 30 - ? = 15
412. Number detectives: 30 - ? = 13
413. Use the pattern: 9-5, 90-50, 900-500
414. Use the pattern: 8-5, 80-50, 800-500
415. Use the pattern: 6-2, 60-20, 600-200
416. Use the pattern: 9-8, 90-80, 900-800
417. Use the pattern: 5-3, 50-30, 500-300
418. Use the pattern: 8-2, 80-20, 800-200
419. Takeaway board: 3? - 14 = 23
420. Takeaway board: 2? - 13 = 13
421. Takeaway board: 4? - 22 = 27
422. Takeaway board: 6? - 12 = 55
423. Takeaway board: 5? - 26 = 32
424. Count Down: 6 less than 41
425. Count Down: 7 less than 52
426. Count Down: 3 less than 42
427. Count Down: 6 less than 43
428. Count Down: 8 less than 47
429. Taking Tens: 44 - 20
430. Taking Tens: 68 - 30
431. Taking Tens: 98 - 50
432. Taking Tens: 32 - 20
433. Taking Tens: 59 - 40
434. Taking Tens: 87 - 20
435. Taking Tens: 72 - 40
436. Subtract.chains 48 - 7 - 2 - 9, 35 - 4 - 3 - 8
437. Subtract.chains 47 - 4 - 3 - 7, 28 - 8 - 2 - 5
438. Subtract.chains 23 - 4 - 1 - 3, 36 - 5 - 2 - 6
439. Subtract.chains 32 - 4 - 7 - 4, 45 - 2 - 10 - 5
440. Subtract.chains 28 - 5 - 2 - 10, 50 - 5 - 3 - 2
441. Bargain Basement: $20 - $8
442. Spot the difference: 60 & 40, 12 & 18, 100 & 95
443. Spot the difference: 20 & 14, 17 & 9, 80 & 73
444. Spot the difference: 100 & 30, 19 & 11, 30 & 24
445. Spot the difference: 50 & 41, 100 & 92, 101 & 98
446. Changing Numbers 55-37=?
447. Changing Numbers 65-54=?
448. Changing Numbers 48-22=?
449. Changing Numbers 36-16=?
450. Changing Numbers 51-28=?
451. Changing Numbers 42-32=?
452. Write the missing number: 7 + ? + 14 = 30
453. Write the missing number: 15 + 4 + ? = 30
454. Write the missing number: 12 + 10 + ? = 30
455. Write the missing number: 15 + 5 + ? = 30
456. Write the missing number: 18 + 8 + ? = 30
457. Write the missing number: 5 + 5 + ? = 30
458. Number Detectives: ? - 15 = 10
459. Number Detectives: ? - 9 = 21
460. Number Detectives: 30 - 17 = ?
461. Number Detectives: 30 - 14 = ?
462. Number Detectives: 30 - ? = 12
463. Number Detectives: 40 - ? = 29
464. Takeaway board 152-? = 144
465. Takeaway board 547-? = 538
466. Takeaway board 553-? = 546
467. Takeaway board 291-? 285
468. Takeaway board 742-? = 737
469. Takeaway Board ?9-18 = 71
470. Takeaway Board 67-1?=53
471. Takeaway Board 79-?8=61
472. Takeaway Board ?7-17=50
473. Takeaway Board ?3-21=72
474. Count down 52-4=?
475. Count down 43-6=?
476. Count down 61-5=?
477. Count down 36-8=?
478. Count down 72-7=?
479. Count down 94-9=?
480. Eleven family: Subtract 1, 11 & 21 from 5
481. Eleven family: Subtract 1, 11 & 41 from 85
482. Eleven family: Subtract 1, 11 & 31 from 77
483. Eleven family: Subtract 1, 11 & 21 from 68
484. Eleven family: Subtract 1, 11 & 71 from 96
485. Subtract 2, 12 from 100
486. Subtract 3, 13 from 100
487. Subtract 5, 15 from 100
488. Subtract 7, 17 from 100
489. Subtract 8, 18 from 100
490. Subtract 4, 14 from 100
491. Subtraction chains 80-6-5-3, 70-4-2-5
492. Subtraction chains 30-9-2-5, 60-5-4-3
493. Subtraction chains 40-5-6-3, 50-9-2-8
494. Subtraction chains 90-3-5-3, 40-2-8-5
495. Subtraction chains 60-9-2-3, 50-3-6-10
496. Changing Numbers 84 to 63
497. Changing Numbers 100 to 44
498. Changing Numbers 40 to 24
499. Changing Numbers 124 to 98
500. Write the missing number: 25 + 3 + ? = 35
501. Write the missing number: 25 + 4 + ? = 35
502. Write the missing number: 25 + 2 + ? = 35
503. Write the missing number: 25 + 5 + ? = 35
504. Write the missing number: 25 + 1 + ? = 35
505. Write the missing number: 35 + 5 + ? = 50
506. Write the missing number: 35 + 7 + ? = 50
507. Write the missing number: 35 + 9 + ? = 50
508. Write the missing number: 35 + 13 + ? = 50
509. Write the missing number: 35 + 11 + ? = 50
510. Subtracting tens: 88 - ? = 48
511. Subtracting tens: 57 - ? = 27
512. Subtracting tens: 44 - ? = 24
513. Subtracting tens: 86 - ? = 56
514. Subtracting tens: 94 - ? = 24
515. Subtracting tens 55 - 20 = ?
516. Subtracting tens 48 - 20 = ?
517. Subtracting tens 72 - 30 = ?
518. Subtracting tens 87 - 60 = ?
519. Subtracting tens 91 - 60 = ?
520. The Mysteries of 40!: 40-?=31, 40-?=33, 40-?=30
521. The Mysteries of 40!: 40-?=51, 40-?=38, 40-?=32
522. The Mysteries of 40!: 40-?=32, 40-?=29, 40-?=37
523. The Mysteries of 40!: 40-?=29, 40-?=38, 40-?=39
524. The Mysteries of 40!: 40-?=30, 40-?=33, 40-?=36
525. The Mysteries of 40!: 40-?=29, 40-?=31, 40-?=33
526. The Mysteries of 40!: 40-?=28, 40-?=32, 40-?=18
527. The Mysteries of 30!: 30-?=26, 30-?=23, 30-?=27
528. The Mysteries of 30!: 30-?=23, 30-?=13, 30-?=3
529. The Mysteries of 30!: 30-?=18, 30-?=15, 30-?=12
530. The Mysteries of 30!: 30-?=14, 30-?=19, 30-?=9
531. Subtraction chains: 30-4-10-8, 30-5-10-7
532. Subtraction chains: 30-4-16-8, 30-5-3-11
533. Subtraction chains: 30-8-6-12, 30-6-3-5
534. Subtraction chains: 30-3-4-13, 30-6-5-7
535. Subtraction chains: 30-10-9-4, 30-5-9-7
536. Changeover: 7 less than 301
537. Changeover: 6 less than 904
538. Changeover: 6 less than 503
539. Changeover: 7 less than 204
540. Changeover: 8 less than 305
541. Tropical fruit feast: 4 x $5
542. Times change: Click all statements correctly describing the array
543. Times change: Click all statements correctly describing the array
544. Times change: Click all statements correctly describing the array
545. Times change: Click all statements correctly describing the array
546. Times change: Click all statements correctly describing the array
547. Dollar Shares: Half of $6
548. Bozo and the cupcakes: Half of 10 is ?
549. Bozo and the cupcakes: 10 is half of ?
550. Half of 46 buses
551. Bozo and the cupcakes: Half of 8 is ?
552. Bozo and the cupcakes: 8 is half of ?
553. Kind Aunties: Share $20 among 4
554. Dividing the cake
555. Dividing the cake
556. Dino Dinner Divide - working backwards
557. Cake Work - working backwards
558. Build a Total - number sequence, 15
559. Piecing the Petals: Select correct half to complete picture
560. Tower In Two: Select correct half to complete picture
561. Half A Crown - select correct half to complete picture
562. Half Lighting - select correct half to complete picture
563. Torn In Two - select correct half to complete picture
564. Fragment of a Flag - select correct half to complete picture
565. Tiger in Two - select correct half to complete picture
566. Half A Butterfly - select correct half to complete picture
567. Half A Stool - select correct half to complete picture
568. The Shirt Off My Back - select correct half to complete picture
569. Half A Hat - select correct half to complete picture
570. The Chicken Story: forty + thirty
571. 16 go to WaterWorld: 5+4+3+?
572. 17 go to Waterworld: 6+5+2+?
573. 14 go to Waterworld: 6+3+2+?
574. 18 go to WaterWorld: 3+3+2+?
575. 15 go to WaterWorld: 5+3+2+?
576. 16 go to Waterworld? 2+3+3+?
577. Chicken multiplication: 3 + 3 + 3 = ?
578. Dollar Shares: Half of $10
579. Dollar Shares: Half of $8
580. Bessie Finds Half: 6 geese a-laying
581. Bessie Finds Half: 8 maids a-milking
582. Bessie Finds Half: 12 proud pink flamingos
583. The Chicken Story: sixty + thirty
584. The Chicken Story: fifty + twenty
585. 19 go to Waterworld: 5+4+3+?
586. Make 50: 32+8+? = 50
587. Tropical Fruit Feast: $10 = 5 x ?
588. Tropical Fruit Feast: $8 = 4 x ?
589. Tropical fruit feast: 2 x $4
590. Tropical fruit feast: 2 x $2
591. Movie money: $18 / 3
592. Bessie Finds Half: 12 chocolates
593. Halving Lambs: A group of 18 lambs
594. Finding Half: 6 basketballs
595. Give Gary Half: 6 choc bars
596. Half the Party: 8 kookaburras up a gum tree
597. Freezing Fractions - 12 Antarctic penguins
598. Huge Grinley's: 1 quarter of 4 cars
599. Quartered for Serving: 8 apricot marshmallows
600. Quartered Crop- 16 fresh green crisp juicy apples
601. Sharing Quarters - 12 bright red toy steam engines
602. Saving Half: $20 / 2
603. Fractions with Fauna: 60 cents halved
604. Fledgling Fractions: 60 cents / 2
605. Cash Halves - Half of: $18
606. Share Bears: A group of 16 fluffy teddies to be halved
607. Find Half: A batch of 14 steak 'n' bacon pies
608. Half of 10 fierce pirates
609. 20 swimming swans: Put half on each pond
610. Find Half: 6 Flamingoes Balancing
611. Find Half: 8 monsters mixing
612. Half and half: 8 pieces
613. Half the herd. 12 bulls
614. 10 butterflies fluttering: Halve them!
615. Four moist mangos_shared
616. Make 1 whole butterfly
617. Make 1 whole crown
618. Make 1 whole flower
619. Make 1 whole tophat
620. Make 1 whole building
621. Six Bright Berries
622. David Determines Quarters: 12 supersonic jets
623. David Determines Quarters: 8 scrumptious sponges
624. Faye Feeds in Quarters: 16 pigeons
625. David and Fran Take Fractions: Half of 8
626. David at the airport: Half of 6
627. David at the hospital: One quarter of 4
628. Build A Total - number sequence, 40
629. Build A Total - number sequence, 50
630. Build A Total - number sequence, 55
631. One Juicy Apple
632. Gavin at the shop: 60c + 10c
633. Damien at the shop: 10c + 5c
634. Jenny at the shop: 60c + 30c
635. Sarah at the shop: 50c + 40c
636. Emma at the shop: 2 x 5c
637. Samuel at the shop: 3 x 10c
638. Zachary at the shop: 3 x 5c
639. Emma at the shop: 25c + 15c
640. Charlotte at the shop: 60c + 25c
641. Marjorie at the shop: 70c + 15c
642. Felicity at the shop: 50c + 45c
643. Amy at the shop: 50c + 10c
644. David at the shop: 45c + 30c
645. Alisa at the shop: 40c + 25c
646. Ayesha at the shop: 25c + 10c
647. Sherwyn at the shop: 50c + 30c
648. Fizah at the shop: 25c + 30c
649. Shyla at the shop: 25c + 70c