Add and subtract numbers with up to 4 digits using the formal written methods of columnar addition and subtraction where appropriate
1. | Changing Numbers - 2458 to 2558 | |
2. | Changing Numbers - 7899 to 7909 | |
3. | Changing Numbers - 8999 to 9000 | |
4. | Changing Numbers - 1040 to 1140 | |
5. | Changing Numbers - 1240 to 1250 | |
6. | 1 less, 10 more than 4000 | |
7. | 10 less, 100 more than 5302 | |
8. | 100 Zone: 95+7=? 101-?=99 ?+6=103 | |
9. | 100 Zone: 95+6=? 103-?=99 ?+6=104 | |
10. | 100 Zone: 98+7=? 105-?=98 ?+6=105 | |
11. | 100 Zone: 98+6=? 102-?=98 ?+5=103 | |
12. | 100 Zone: 98+3=? 101-?=97 ?+5=102 | |
13. | 36 + 12 = 48 So what else is true? | |
14. | Mystery number: ?+7=252 | |
15. | Mystery number: ?+6=174 | |
16. | Mystery number: ?+7=451 | |
17. | Mystery number: ?+6=512 | |
18. | Mystery number: ?+6+163 | |
19. | Mystery number: 157+?=163 | |
20. | Mystery number: 133+?=146 | |
21. | Mystery number: 212+?=224 | |
22. | Mystery number: 106+?=118 | |
23. | Mystery number: 106+?=118 | |
24. | On the Board: *4*+*6=569 | |
25. | On the Board: 81*+*6=*09 | |
26. | On the Board: *52+10*=3*8 | |
27. | On the Board: 7**+102=*97 | |
28. | On the Board: 6*+*2=100 | |
29. | On the Board: *6+2*=100 | |
30. | On the Board: 4*+*7=100 | |
31. | 100 zone: 796+7,794+8,799+6 | |
32. | 100 zone: 593+7,594+8,596+5 | |
33. | 100 zone: 693+9,695+8,697+7 | |
34. | 100 zone: 392+6,393+7,392+8 | |
35. | 100 zone: 196+9,194+7,197+5 | |
36. | Complem. add/subtract: 216+84=300 | |
37. | Complem. add/subtract: 112+32=144 | |
38. | Complem. add/subtract: 125+14=139 | |
39. | Complem. add/subtract: 105+24=129 | |
40. | Complem. add/subtract: 210+14=224 | |
41. | Number detectives: 348+103=? | |
42. | Number detectives: 56+92=? | |
43. | Number detectives: 156+104=? | |
44. | Number detectives: 201+99=? | |
45. | Same or Different: Answer 62 | |
46. | Same or Different: Answer 58 | |
47. | Same or Different: Answer 44 | |
48. | Hundreds and hundreds: 657+173=830 | |
49. | Hundreds and hundreds: 6?8+157=?2? | |
50. | Number detectives: 30+?, 20+?, 10+?=100 | |
51. | Number detectives: 82+?, 24+?, 76+?=100 | |
52. | Number detectives: 89+?, 21+?, 59+?=100 | |
53. | Addition chains 10 multiples | |
54. | Addition chains 10 multiples | |
55. | Comp. pairs add/subtract: 246+357=603 | |
56. | Comp. pairs add/subtract: 545+328=873 | |
57. | Comp. pairs add/subtract: 488+323=811 | |
58. | Comp. pairs add/subtract: 493+257=750 | |
59. | Hundreds and hundreds: Complete vertical hundreds addition | |
60. | Hundreds and hundreds: Complete vertical hundreds addition | |
61. | 100 zone: *+95=500 365+*=400 625+75=* | |
62. | 100 zone: *+185=200 655+*=700 335+65=* | |
63. | 100 zone: *+25=300 445+*=500 895+5=* | |
64. | 100 zone: *+45=400 165+*=200 725+75=* | |
65. | 100 zone: *+85=700 405+*=500 375+25=* | |
66. | True or False?: 26+46=72 13+29=44 62+18=80 38+25=53 | |
67. | True or False?: 27+18=45 32+39=49 49+27=76 57+26=83 | |
68. | True or False?: 19+49=58 48+33=81 24+37=62 64+28=90 | |
69. | Number Detectives: Mystery Teens | |
70. | Number Detectives: Mystery Teens | |
71. | Number Detectives: Mystery Teens | |
72. | Number Detectives: Mystery Teens | |
73. | Number Detectives: Mystery Teens | |
74. | 100 Zone: 180+30, 270+50, 40+330 | |
75. | 100 Zone: 568+30, 623+20, 60+480 | |
76. | 100 Zone: 372+20, 638+50, 110+40 | |
77. | 100 Zone: 263+20, 390+30, 70+680 | |
78. | 100 Zone: 890+50, 329+30, 50+440 | |
79. | Complementary pairs: 347+454=801 | |
80. | Complementary pairs: 482+395=877 | |
81. | Complementary pairs: 278+596=874 | |
82. | Complementary pairs: 532+209=741 | |
83. | Complementary pairs: 627+277=904 | |
84. | Add it up: 347+454 | |
85. | Add it up: 627+277 | |
86. | Add it up: 1288+252 | |
87. | Add it up: 2273+339 | |
88. | Add it up: 6082+889 | |
89. | Add it up: 5346+369 | |
90. | Add it up: 7239+697 | |
91. | Add board: 140*+8*0=*229 | |
92. | Add board: 183*+3*0=2*60 | |
93. | Add board: *7*0+458=2*5* | |
94. | Add board: 15*5+60*=2*55 | |
95. | Add board: 1*88+4*0=*10* | |
96. | Adding Hundreds 136+*=536 566+200=* 300m/t264=* | |
97. | Adding Hundreds 532+*=732 328+500=* 600m/t119=* | |
98. | Adding 105 254+*=250 421+105=* 105m/t101=* | |
99. | Hundreds to Add - 562+*=667 263+105=* 105m/t714=* | |
100. | Hundreds to Add - 365+*=470 532=105=637 105m/t283=* | |
101. | Add Board: Complete vertical algorithm | |
102. | Add Board: Complete vertical algorithm | |
103. | Add Board: Complete vertical algorithm | |
104. | Add Board: Complete vertical algorithm | |
105. | Hundreds and Hundreds: Complete vertical algorithm | |
106. | Hundreds and Hundreds: Complete vertical algorithm | |
107. | Hundreds and Hundreds: Complete vertical algorithm | |
108. | Hundreds and Hundreds: Complete vertical algorithm | |
109. | Hundreds and Hundreds: Complete vertical algorithm | |
110. | True or False? Click all the number sentences that are true. | |
111. | True or False? Click all the number sentences that are true. | |
112. | True or False? Click all the number sentences that are true. | |
113. | True or False? Click all the number sentences that are true. | |
114. | Add it up: 2,969+852 | |
115. | Add it up: 3,268+852 | |
116. | Add it up: 2,959+356 | |
117. | Add it up: 5,478+852 | |
118. | Add it up: 5,478+852 | |
119. | Thousands and Thousands: Complete vertical algorithm | |
120. | Thousands and Thousands: Complete vertical algorithm | |
121. | Thousands and Thousands: Complete vertical algorithm | |
122. | Thousands and Thousands: Complete vertical algorithm | |
123. | Thousands and Thousands: Complete vertical algorithm | |
124. | Add hundreds: 346 + 400, 1426 + 500, 200 + 7019 | |
125. | Adding hundreds: Multiple operations with hundreds numbers | |
126. | Adding hundreds: Multiple operations with hundreds numbers | |
127. | Adding hundreds: Multiple operations with hundreds numbers | |
128. | Adding hundreds: Multiple operations with hundreds numbers | |
129. | Number detectives: Add/subtract hundreds numbers | |
130. | Number detectives: Add/subtract hundreds numbers | |
131. | Number detectives: Add/subtract hundreds numbers | |
132. | Number detectives: Add/subtract hundreds numbers | |
133. | Number detectives: Add/subtract hundreds numbers | |
134. | Use the Pattern: 43 + 39, 43 + 40, 430 + 400 | |
135. | Use the Pattern: 56 + 70, + 69, 560 + 700 | |
136. | Use the Pattern: 34 + 80, + 79, 340 + 800 | |
137. | Use the Pattern: 27 + 90, + 89, 270 + 900 | |
138. | Use the Pattern: 62 + 79, 62 + 80, 620 + 800 | |
139. | Add It Up: Addition of 4-digit numbers with regrouping | |
140. | Add It Up: Addition of 4-digit numbers with regrouping | |
141. | Add It Up: Addition of 4-digit numbers with regrouping | |
142. | Add It Up: Addition of 4-digit numbers with regrouping | |
143. | Add It Up: Addition of 4-digit numbers with regrouping | |
144. | Add It Up: Addition of 4-digit numbers with regrouping | |
145. | Add It Up: Addition of 4-digit numbers with regrouping | |
146. | Add It Up: Addition of 4-digit numbers with regrouping | |
147. | Add It Up: Addition of 4-digit numbers with regrouping | |
148. | Add It Up: Addition of 4-digit numbers with regrouping | |
149. | Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers | |
150. | Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers | |
151. | Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers | |
152. | Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers | |
153. | Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers | |
154. | Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers | |
155. | Use the pattern 6+7 60+70 160+170 | |
156. | Use the pattern 12+8 120+80 1200+800 | |
157. | Use the pattern 21+9 210+90 2100+900 | |
158. | Use the pattern 3+8 30+80 300+800 | |
159. | Use the pattern 16+4 160+40 1600+400 | |
160. | Add these 3 numbers: 80 + 70 + 40 | |
161. | Add these 3 numbers: 90 + 60 + 30 | |
162. | Add it up 4126+5999 | |
163. | Add it up 5672+6928 | |
164. | Add it up 2369+9872 | |
165. | Add it up 8273+7989 | |
166. | Add it up 7827+6376 | |
167. | Adding hundreds: 695+*=959, 3492+500=*, 600m/t503=* | |
168. | Adding hundreds: 364+*=1264, 426+600=*, 200m/t 236 =* | |
169. | Adding hundreds 562+*=862, 658+200=*, 500m/t 352=* | |
170. | Adding hundreds: 263+*=663, 222+500=*, 600m/t406=* | |
171. | Adding hundreds 462+*=862, 426+300=* 800m/t169=* | |
172. | Give or take a thousand Add 4000 to 2668 | |
173. | Give or take a thousand Add 8000 to 7558 | |
174. | Give or take a thousand what is 6000 m/t 8331? | |
175. | Add these three numbers 24+45+16=? | |
176. | Add these three numbers 20+35+16=? | |
177. | Add these three numbers 45+15+14=? | |
178. | Add these three numbers 26+12+22=? | |
179. | Add these three numbers 37+13+18=? | |
180. | Number detectives: Four's no chore - Add 4 clustered numbers | |
181. | Number detectives: Four's no chore - Add 4 clustered numbers | |
182. | Number detectives: Add 4 clustered tens numbers | |
183. | Number detectives: Add 4 clustered tens numbers | |
184. | True or False? 9-5=8-4 | |
185. | True or False?: 12 - 2 = 15 - 5 | |
186. | True or False?: 28 - 8 = 30 - 10 | |
187. | Changing numbers 683-554 | |
188. | Changing numbers 257-138 | |
189. | Changing numbers 884-763 | |
190. | Changing numbers 576-557 | |
191. | Changing numbers 794-683 | |
192. | Changing numbers 461-432 | |
193. | Hundreds takeaway: *53-*7=61* | |
194. | Hundreds takeaway: *42 - 5*9 = 31* | |
195. | Hundreds takeaway: *75 - 2*6 = 10* | |
196. | Hundreds takeaway: *43 - 2*7 = 20* | |
197. | Hundreds takeaway: *82-4*7 = 18* | |
198. | The Mysteries of 50! 50-35,12,6 | |
199. | The Mysteries of 50! 50-16,21,30 | |
200. | Complem. add/subtract: 652-547=105 | |
201. | Complem. add/subtract: 845-69=776 | |
202. | Spot the difference: 175-162, 187-170, 264-243 =? | |
203. | Spot the difference: 360-345, 122-108, 754-742 =? | |
204. | Spot the difference: 217-201, 184-167, 340-321 =? | |
205. | Spot the difference: 609-597, 99-118, 77-105 =? | |
206. | Spot the difference: 360-375, 129-118, 156-140 =? | |
207. | Take it away 154-36=118 | |
208. | Take it away 763-57=706 | |
209. | Take it away 681-29=652 | |
210. | Same or Different: Answer 42 | |
211. | Same or Different: Answer 50 | |
212. | Same or Different: Answer 85 | |
213. | Same or Different: Answer 76 | |
214. | Same or Different: Answer 24 | |
215. | Same or Different: Answer 60 | |
216. | Same or Different: Answer 32 | |
217. | Same or Different: Answer 45 | |
218. | Same or Different: Answer 21 | |
219. | Same or Different: Answer 55 | |
220. | Hundreds Takeaway: *00 - 37 = 66* | |
221. | Hundreds Takeaway: *00 - *8 = 352 | |
222. | Hundreds Takeaway: 800 - **5 = 45 | |
223. | Hundreds Takeaway: *00 - 569 = *1 | |
224. | Hundreds Takeaway: *00-26*=35 | |
225. | Hundreds Takeaway: *8*-2*2=132 | |
226. | Hundreds Takeaway: 5*9-35*=*11 | |
227. | Take tens: 527-?=497 | |
228. | Take tens: 849-?=759 | |
229. | Take tens: 321-?=251 | |
230. | Take tens: 513-?=463 | |
231. | Take tens: 655-?=595 | |
232. | Take tens: 734-50=? | |
233. | Take tens: 408-90=? | |
234. | Take tens: 978-80=? | |
235. | Take tens: 345-70=? | |
236. | Take tens: 533-60=? | |
237. | Mysteries of 100!: 100-?=77, 100-?=60, 100-?=88 | |
238. | Mysteries of 100!: 100-?=45, 100-?=28, 100-?=66 | |
239. | Mysteries of 100!: 100-?=40, 100-?=75, 100-?=62 | |
240. | Mysteries of 100!: 100-?=19, 100-?=80, 100-?=69 | |
241. | Mysteries of 100!: 100-?=76, 100-?=65, 100-?=54 | |
242. | Subtraction chains: 79-14-15-12, 68-17-20-11 | |
243. | Subtraction chains: 76-13-12-11, 92-20-12-14 | |
244. | 1000s crossing: 6002-6, 4001-4, 2005-7 | |
245. | 1000s crossing: 7002-8, 5004-7, 3003-6, | |
246. | 1000s crossing: 9002-9, 18006-7, 7007-9 | |
247. | 1000s crossing: 5001-5, 10003-5, 1004-5 | |
248. | 1000s crossing: 8004-7, 13003-8, 4006-9 | |
249. | Tens Takeaway: 500-50, 70 less than 700, ?-90=810 | |
250. | Tens Takeaway: 900-30, 10 less than 400, ?-60=40 | |
251. | Tens Takeaway: 300-80, 50 less than 700, ?-90=110 | |
252. | Tens Takeaway: 600-20, 70 less than 500, ?-30=370 | |
253. | True or False?: 44-4=60-20 | |
254. | Hundreds Takeaway: 777 - 699 = *78 | |
255. | Hundreds Takeaway: 658 - *79 = 1*9 | |
256. | Hundreds Takeaway: 9*1 - *52 = 1*9 | |
257. | Hundreds Takeaway: 792 -*6* = 5*8 | |
258. | Hundreds Takeaway: **1 - 21* = 185 | |
259. | Mysteries of 50!: 50-?=46, 36, 26 | |
260. | Mysteries of 60!: 60-?=35, 30, 45 | |
261. | Mysteries of 60!: 60-?=40, 30, 20 | |
262. | Mysteries of 60!: 60-?=32, 28, 16 | |
263. | Mysteries of 50!: 50-?=17, 28, 39 | |
264. | Mysteries of 50!: 50-?=33, 8, 24 | |
265. | Mysteries of 50!: 50-?=34, 25, 14 | |
266. | Mysteries of 70!: 70-?=44, 38, 29 | |
267. | Mysteries of 70!: 70-?=58, 33, 9 | |
268. | Mysteries of 70!: 70-?=28, 35, 43 | |
269. | Subtraction Chains | |
270. | Subtraction Chains | |
271. | Subtraction Chains | |
272. | Subtraction Chains | |
273. | Subtraction Chains | |
274. | Subtraction Chains | |
275. | Subtraction Chains | |
276. | Subtraction Chains | |
277. | Subtraction Chains | |
278. | Subtraction Chains | |
279. | Hundreds and Thousands: *5** - *90=1890 | |
280. | Thousands Takeaway: 61*8 - 4*2* =*219 | |
281. | Thousands Takeaway: *47* - 2859 = 5**4 | |
282. | Hundreds and Thousands: *782 - *3* = 18*6 | |
283. | 100 zone: 105-15, 306-8, 109-10 | |
284. | 100 zone: 304-7, 400-15, 401-5 | |
285. | 100 zone: 400-6, 400-9, 400-11 | |
286. | 100 zone: 402-5, 312-15, 314-15 | |
287. | 100 zone: 108-9, 111-12, 106-7 | |
288. | Take it away: 422 - 114 = ? | |
289. | Take it away: 650 - 322 = ? | |
290. | Take it away: 456 - 245 = ? | |
291. | Take it away: 763 - 335 = ? | |
292. | Take it away: 389 - 147 = ? | |
293. | 1000s crossing: 6010-5995, 8012-7990, 4023-3998 | |
294. | 1000s crossing: 2002-1999, 9015-8990, 5011-4991 | |
295. | 1000s crossing: 4011-3994, 5009-4989, 7013-6990 | |
296. | 1000s crossing: 3021-2988, 6017-5996, 2008-1994 | |
297. | 1000s crossing: 8016-7991, 7004-6987, 9020-8995 | |
298. | True or False?: 267 - 89 = 178 | |
299. | True or False?: 287 = 372 - 85 | |
300. | True or False?: 751 - 96 = 655 | |
301. | Same or different: Click all the boxes with the same answer. | |
302. | Same or different: Click all the boxes with the same answer. | |
303. | Same or different: Click all the boxes with the same answer. | |
304. | Same or different: Click all the boxes with the same answer. | |
305. | Same or different: Click all the boxes with the same answer. | |
306. | Subtraction Chains | |
307. | Subtraction Chains | |
308. | Subtraction Chains | |
309. | Subtraction Chains | |
310. | Take Tens 541-60=481,924-90=834 | |
311. | Take Tens 874-80=481,219-20=199 | |
312. | Take Tens 603-10=593,128-50=78 | |
313. | Take Tens 459-70=389,816-40=776 | |
314. | Take Tens 352-70=282,715-30=685 | |
315. | Thousands Takeaway: Complete vertical algorithm | |
316. | Thousands Takeaway: Complete vertical algorithm | |
317. | Thousands Takeaway: Complete vertical algorithm | |
318. | Thousands Takeaway: Complete vertical algorithm | |
319. | Thousands Takeaway: Complete vertical algorithm | |
320. | Thousands Takeaway: Complete vertical algorithm | |
321. | Thousands Takeaway: Complete vertical algorithm | |
322. | Thousands Takeaway: Complete vertical algorithm | |
323. | Thousands Takeaway: Complete vertical algorithm | |
324. | Take it away 692-459 | |
325. | Take it away 942-513 | |
326. | Take it away 794-387 | |
327. | 1000s crossing: 4020-3990, 7005-6985, 3009-2999 | |
328. | 1000s crossing: 5030-4990, 3010-2950, 7970-8040 | |
329. | 1000s crossing: 2030-1980, 4040-3960, 6010-5970 | |
330. | 1000s crossing: 1050-980, 2020-1970, 5070-4990 | |
331. | 1000s crossing: 8020-7940, 4030-3950, 9060-8980 | |
332. | 1000s Crossing: 6015-5999, 8014-7995, 3024-2990 | |
333. | Same or different: Click all boxes with the answer 426 | |
334. | Same or different: Click all boxes with the answer 236 | |
335. | Same or different: Click all boxes with the answer 567 | |
336. | Same or different: Click all boxes with the answer 222 | |
337. | Same or different: Click all boxes with the answer 468 | |
338. | Same or different: Click all boxes with the answer 673 | |
339. | Thousands Takeaway: Write missing numbers in vertical subtraction of thousands numbers | |
340. | Thousands Takeaway: Write missing numbers in vertical subtraction of thousands numbers | |
341. | Thousands Takeaway: Write missing numbers in vertical subtraction of thousands numbers | |
342. | Thousands Takeaway: Write missing numbers in vertical subtraction of thousands numbers | |
343. | Thousands Takeaway: Write missing numbers in vertical subtraction of thousands numbers | |
344. | Take Hundreds:4421-?=3921,9365-500=?,5350-500=? | |
345. | 50s Get Together: 1000 - ? = 750 | |
346. | 50s Get Together: 1000 - 850 =* | |
347. | 50s Get Together: 4250 - 650 =* | |
348. | 50s Get Together: * + 550 = 1000 | |
349. | 50s Get Together: 550 + ? = 1000 | |
350. | Thousands crossing: 12009-12, 16005-9, 25006-15, | |
351. | True or False?: 431 - 62 = 627 - 258 | |
352. | True or False?: 721 - 42 = 930 - 251 | |
353. | Thousands Takeaway: *42* - 4480 = 4**5 | |
354. | Thousands Takeaway: 673* - **41 = 39*9 | |
355. | Thousands Takeaway: *34* - 2375 = 5**8 | |
356. | Thousands Takeaway: 70** - *104 = 1*99 | |
357. | Thousands Takeaway: *04* - 27*9 = 1*21 | |
358. | 50s get together: 4000 - ? = 750 | |
359. | 50s get together: 6000 - ? = 650 | |
360. | 50s get together: 2000 - ? = 150 | |
361. | 50s get together: 1000 - 650 = ? | |
362. | 50s get together: 1000 - 450 = ? | |
363. | 50s get together: 8000 - 450 = ? | |
364. | 50s get together: ? - 150 = 1850 | |
365. | 50s get together: ? - 350 = 6650 | |
366. | 50s get together: ? - 850 = 4150 | |
367. | 50s get together: ? - 5350 = 650 | |
368. | Spot the difference: Write the difference between 612 and 588 | |
369. | Spot the difference: Write the difference between 315 and 291 | |
370. | Spot the difference: Write the difference between 708 and 687 | |
371. | Spot the difference: Write the difference between 475 and 395 | |
372. | Spot the difference: Write the difference between 117 and 95 | |
373. | Complementary add/sub: 8236-547=7689 | |
374. | Complementary add/sub: 2815-492=2323 | |
375. | Complementary add/sub: 5730-166=5564 | |
376. | Complementary add/sub: 1073-561=512 | |
377. | Complementary add/sub: 6923-784=6139 | |
378. | Spot the difference: 4550 - 2150 | |
379. | Spot the difference: 6600 - 3650 | |
380. | Spot the difference: 5750 - 2550 | |
381. | Spot the difference: 9350 - 5450 | |
382. | Spot the difference: 2600 - 8700 | |
383. | Spot the difference: 8400 - 3500 | |
384. | Spot the difference: 3150 - 1500 | |
385. | Take it away: Subtraction with decomposition | |
386. | Take it away: Subtraction with decomposition | |
387. | Take it away: Subtraction with decomposition | |
388. | 10 less, 100 more than 4508 | |
389. | 100 less, 10 more than 6577 | |
390. | 100 less, 1000 more than 2231 | |
391. | 100 less, 100 more than 7323 |