Know the basic addition and subtraction facts
Know the basic addition and subtraction facts
1. | 2 less, 2 more than 28 | |
2. | 2 less, 2 more than 15 | |
3. | 2 less, 2 more than 23 | |
4. | 2 less, 2 more than 13 | |
5. | 2 less, 2 more than 38 | |
6. | 2 less, 2 more than 21 | |
7. | 2 less, 2 more than 47 | |
8. | 2 less, 2 more than 63 | |
9. | 2 less, 2 more than 74 | |
10. | 2 less, 2 more than 30 | |
11. | Changing Numbers: 10 to 15 | |
12. | Going Shopping: $3 + $2 = $? | |
13. | Katherine Goes Shopping: $1 + $3 | |
14. | Eduardo Goes Shopping: $3 + $4 | |
15. | Add these 3 numbers: 3+4+3 | |
16. | Add these 3 numbers: 2+4+1 | |
17. | Add these 3 numbers: 3+2+1 | |
18. | Add these 3 numbers: 7+1+1 | |
19. | Add these 3 numbers: 1+1+2 | |
20. | Add these 3 numbers: 5+2+1 | |
21. | Number Detectives ? + 3 = 6 | |
22. | Team Effort: $12 + $7 | |
23. | True or False: 3+4=7 | |
24. | True or False: 6+2=8 | |
25. | True or False: 6+3=10 | |
26. | True or False: 5+2=8 | |
27. | True or False: 1+4=6 | |
28. | True or False: 6+1=7 | |
29. | True or False: 3+3=9 | |
30. | True or False: 4+4=8 | |
31. | True or False: 4+2=7 | |
32. | True or False: 5+1=6 | |
33. | True or False: 2+4=0 | |
34. | True or False: 3+1=1 | |
35. | True or False: 2+5=3 | |
36. | True or False: 1+0=1 | |
37. | True or False: 5+4=10 | |
38. | Add these three numbers: 4+2+3 | |
39. | Number Detectives: ? + 5 = 11 | |
40. | True or False? 3+4 = 7 | |
41. | True or False? 8+1 = 10 | |
42. | True or False? 7+2 = 9 | |
43. | True or False? 6+2 = 8 | |
44. | True or False? 2+1 = 4 | |
45. | True or False? 6+1 = 5 | |
46. | True or False? 5+4 = 8 | |
47. | True or False? 5+4 = 9 | |
48. | True or False? 9+0 = 9 | |
49. | True or False? 7+2 = 9 | |
50. | True or False? 3+6 = 10 | |
51. | True or False? 8+2 = 10 | |
52. | True or False? 4+4 = 8 | |
53. | True or False? 3+5 = 7 | |
54. | True or False? 2+8 = 8+2 | |
55. | Number Detectives: 9 + 5 = ? | |
56. | Number Detectives: 6 + ? = 9 | |
57. | Word Wise: The sum of 10 and 4 | |
58. | Word Wise: Add 5 to 7 | |
59. | Word Wise: 5 more than 4 | |
60. | Word Wise: 7 plus 6 | |
61. | Word Wise: 5 more than 8 | |
62. | Use the Pattern: 4+3, +4, +5 | |
63. | Add these 3 numbers: 5+5+1 | |
64. | Add these 3 numbers: 8 + 3 + 2 | |
65. | Add these 3 numbers: 9 + 1 + 6 | |
66. | Add these 3 numbers: 4 + 4 + 3 | |
67. | Add these 3 numbers: 6+4+5 | |
68. | Number Detectives: ?+5 = 15 | |
69. | Addition Chain: 5 + 3 = ? + 3 = ? | |
70. | Addition Chain: 6 + 4 = ? + 5 = ? | |
71. | Addition Chain: 2 + 4 = ? + 5 = ? | |
72. | Addition Chain: 3 + 9 = ? + 1 = ? | |
73. | Addition Chain: 4 + 3 = ? + 5 = ? | |
74. | Number Detectives: 9 + ? = 15 | |
75. | Number Detectives: 8 + ? = 15 | |
76. | Use the Pattern: 4+0, +10, +20 | |
77. | Use the Pattern: 5+0, +10, +20 | |
78. | Use the Pattern: 7+0, +10, +20 | |
79. | Use the Pattern: 6+0, +10, +20 | |
80. | Use the Pattern: 3+0, +10, +20 | |
81. | Use the Pattern: 9+0, +10, +20 | |
82. | Going Shopping - $10 + $3 | |
83. | Is the answer...?: Click all boxes with answer 8. | |
84. | 11 + 6 = 17: So what else is true? | |
85. | Changing Numbers: 17 to 21 | |
86. | Changing Numbers: 10 to 21 | |
87. | Changing Numbers: 7 to 11 | |
88. | Changing Numbers: 8 to 13 | |
89. | Changing Numbers: 9 to 12 | |
90. | Changing Numbers: 17 to 21 | |
91. | Changing Numbers: 18 to 21 | |
92. | True or False?: 10+7=17, 15+2=17, 17=10+7, 17+0=17 | |
93. | Who's going to Waterworld? 5+4+3+2 | |
94. | Card Tricks: Red 5 + Black 4 | |
95. | True or False?: 9 + 9 = 18 | |
96. | True or False?: 10 + 5 = 5 + 10 | |
97. | True or False?: 6 + 7 = 14 | |
98. | True or False?: 7 + 7 = 15 | |
99. | True or False?: 8 + 6 = 86 | |
100. | True or False?: 6 + 6 = 13 | |
101. | Number Detectives: 10 + 27 = ? | |
102. | Use the Pattern: 5+4,15+4,25+4 | |
103. | Use the Pattern: 6+4,16+4,26+4 | |
104. | Use the Pattern: 10+2,20+2,30+2 | |
105. | 11+6=17: So what else is true? | |
106. | 21+5=26: So what else is true? | |
107. | 15+12=27: So what else is true? | |
108. | Same or different? Click all boxes with answer 18 | |
109. | Same or Different? Click all boxes with answer 20 | |
110. | Same or Different? Click all boxes with answer 16 | |
111. | Make 19: 8+6+? | |
112. | Make 18: 4+11+? | |
113. | Make 20: 9+11+? | |
114. | Make 20: 9+6+? | |
115. | Number detectives: Mysteries of 15 | |
116. | Number detectives: Mysteries of 16 | |
117. | Number detectives: Mysteries of 13 | |
118. | Number detectives: Mysteries of 17 | |
119. | Number detectives: Mysteries of 14 | |
120. | Addition Chains | |
121. | Addition Chains | |
122. | Addition Chains | |
123. | Addition Chains | |
124. | Add three numbers: 7 + 9 + 3 | |
125. | True or False?: 18 + 2 = 20 | |
126. | True or False?: 7 + 8 = 15 | |
127. | N/D Mysteries of 20! 17+, 11+, 15+ | |
128. | N/D Mysteries of 20! 7+, 10+, 8+ | |
129. | N/D Mysteries of 20! 6+, 9+, 3+ | |
130. | N/D Mysteries of 20! 20+, 5+, 2+ | |
131. | Use the Pattern: 4 + 9, + 10, + 11 | |
132. | Use the Pattern: 5 + 9, + 10, + 11 | |
133. | Use the Pattern: 6 + 9, + 10, + 11 | |
134. | Use the Pattern: 7 + 9, + 10, + 11 | |
135. | Use the Pattern: 8 + 9, + 10, + 11 | |
136. | Changing numbers: 13 changes to 21 | |
137. | Changing numbers: 9 changes to 17 | |
138. | Changing numbers: 8 changes to 17 | |
139. | True or False?: 8 + 8 = 16 | |
140. | True or False?: 15 + 5 = 20 | |
141. | True or False?: 7 + 9 = 16 | |
142. | True or False?: 13 + 1 = 1 + 13 | |
143. | True or False?: 16 + 4 = 20 | |
144. | Addition Chains: 10 + 4 + 6 + 2, 11 + 2 + 3 + 4 | |
145. | Addition Chains: 4 + 5 + 5 + 2, 10 + 5 + 5 + 10 | |
146. | Addition Chains: 2 + 4 + 3 + 10, 12 + 1 + 2 + 7 | |
147. | Addition Chains: 4 + 5 + 6 + 8, 11 + 4 + 3+ 7 | |
148. | Addition Chains: 3 + 2 + 4 + 2, 7 + 2 + 3 + 4 | |
149. | Addition Chains: 3 + 2 + 4 + 8, 4 + 3 + 7 + 4 | |
150. | True or False: 10+9=19 | |
151. | True or False: 9+6=15 | |
152. | 36 + 12 = 48 So what else is true? | |
153. | Same or different:19-12,2+5,3+4,33-26,16-8 | |
154. | Happy Landings 5 minus 3 | |
155. | Frog swamp: 8 - 5 = ? | |
156. | Frog swamp: 8 - 7 = ? | |
157. | Frog swamp: 8 - 6 = ? | |
158. | Frog swamp: 8 - 4 = ? | |
159. | Frog swamp: 8 - 8 = ? | |
160. | Happy Landings 9 minus 6 | |
161. | Subtraction chain 8 - 4 = 4, 4 - 2 = ? | |
162. | Subtraction chain 7 - 2 = 5, 5 - 2 = ? | |
163. | Subtraction chain 9 - 3 = 6, 6 - 2 = ? | |
164. | Subtraction chain 6 - 3 = 3, 3 - 1 = ? | |
165. | Subtraction chain 8 - 2 = 6, 6 - 1 = ? | |
166. | Spot the difference between 3 and 5 | |
167. | Spot the difference between 4 and 4 | |
168. | Spot the difference between 4 and 6 | |
169. | Spot the difference between 4 and 7 | |
170. | Spot the difference between 2 and 8 | |
171. | Ball skills: How many more to make 10? 7+2+? | |
172. | Ball skills: How many more to make 10? 6+3+? | |
173. | Ball skills: How many more to make 10? 5+3+? | |
174. | Ball skills: How many more to make 10? 7+1+? | |
175. | Ball skills: How many more to make 10? 2+3+? | |
176. | Happy Landings 8 minus 5 | |
177. | Happy Landings 8 Take away 4 | |
178. | True or False? 12-7=6 | |
179. | True or False? 13-7=6 | |
180. | True or False? 16-9=10 | |
181. | True or False? 15-8=7 | |
182. | True or False? 12-6=5 | |
183. | Subtraction chain 9 - 1 = 8, 8 - 2 = ? | |
184. | Subtraction chain 8 - 3 = 5, 5 - 2 = ? | |
185. | Subtraction chain 6 - 2 = 4, 4 - 2 = ? | |
186. | Subtraction chain 7 - 3 = 4, 4 - 1 = ? | |
187. | Subtraction chain 9 - 2 = 7, 7 - 3 = ? | |
188. | Spot the difference between 4 and 5 | |
189. | Spot the difference between 3 and 5 | |
190. | Spot the difference between 2 and 6 | |
191. | Spot the difference between 5 and 7 | |
192. | Spot the difference between 2 and 7 | |
193. | Hide and Seek: 7 trolls - 5 | |
194. | Hide and Seek: 7 trolls - 4 | |
195. | Hide and Seek: 6 trolls - 4 | |
196. | Hide and Seek: 8 trolls - 4 | |
197. | Number detectives: ? - 5 = 10 | |
198. | Number detectives: ? - 6 = 3 | |
199. | Number detectives: ? - 7 = 2 | |
200. | Number detectives: ? - 7 = 6 | |
201. | Number detectives: ? - 8 = 4 | |
202. | Number detectives: 14 - 6 = ? | |
203. | Number detectives: 15 - 9 = ? | |
204. | Number detectives: 11 - 8 = ? | |
205. | Number detectives: 13 - 5 = ? | |
206. | Number detectives: 15 - 13 = ? | |
207. | Number detectives: 14 - ? = 4 | |
208. | Number detectives: 11 - ? = 5 | |
209. | Number detectives: 10 - ? = 8 | |
210. | Number detectives: 13 - ? = 5 | |
211. | Number detectives: 14 - ? = 7 | |
212. | Find the first number: ? count on 5 = 8 | |
213. | Find the first number: ? count on 1 = 8 | |
214. | Find the first number: ? count on 2 = 8 | |
215. | Find the first number: ? count back 1 = 8 | |
216. | Find the first number: ? count back 2 = 8 | |
217. | Find the first number: ? count back 3 = 8 | |
218. | Find the first number: ? count back 4 = 8 | |
219. | Find the first number: ? count on 3 = 8 | |
220. | Find the first number: ? count on 4 = 8 | |
221. | Card games: Which is lower, 4 + 2 or 6 + 1? | |
222. | Card games: Which is lower, 7 + 3 or 5 + 4? | |
223. | Card games: Which is lower, 6 + 4 or 2 + 3? | |
224. | Card games: Which is lower, 4 + 3 or 1 + 9? | |
225. | Card games: Which is higher, 4 + 5 or 5 + 1? | |
226. | Number detectives ? -3 = 11 | |
227. | Number detectives 18 -10 = ? | |
228. | Number detectives 17 -? = 5 | |
229. | Word Wise: 14 take away 6 | |
230. | Word Wise: 6 less than 12 | |
231. | Word Wise: 11 less than 16 | |
232. | Use the pattern: 8 - 4, - 3, - 2 | |
233. | Use the pattern: 6 - 6, - 5, - 4 | |
234. | Slippery fish 9 - 9 = ? | |
235. | Slippery fish 10 - 9 = ? | |
236. | Changing numbers: 18 to 9 | |
237. | Changing numbers: 16 to 12 | |
238. | Changing numbers: 12 to 7 | |
239. | Changing numbers: 20 to 9 | |
240. | Changing numbers: 14 to 9 | |
241. | True or False? 20-10=10 | |
242. | True or False? 20-20=0 | |
243. | True or False? 20-1=19 | |
244. | True or False? 15-5=10 | |
245. | True or False? 15-0=15 | |
246. | True or False? 15-9=5 | |
247. | True or False? 10-5=15 | |
248. | True or False? 10-10=0 | |
249. | True or False? 10-1=9 | |
250. | True or False? 10-5=5 | |
251. | True or False? 12-6=6 | |
252. | True or False? 12-5=7 | |
253. | True or False? 12-12=0 | |
254. | True or False? 12-10=0 | |
255. | True or False? 18-9=0 | |
256. | True or False? 18-18=0 | |
257. | True or False? 18-8=10 | |
258. | Take 10: 40 - 10 = ? | |
259. | Write the missing number: 8 + ? + 7 = 20 | |
260. | Write the missing number: 6 + ? + 8 = 20 | |
261. | Write the missing number: ? + 9 + 6 = 20 | |
262. | Write the missing number: 2 + 11 = ? = 20 | |
263. | Write the missing number: ? + 7 + 9 = 20 | |
264. | Subtraction chain 20 - 3 = 17, 17 - 3 = ? | |
265. | Subtraction chain 20 - 6 = 14, 14 - 5 = ? | |
266. | Subtraction chain 20 - 5 = 15, 15 - 2 = ? | |
267. | Subtraction chain 20 - 12 = ? - 6 = 2 | |
268. | Subtraction chain 20 - 9 = 11, 11 - 3 = ? | |
269. | Word Wise!: 12 minus 7 | |
270. | Takeaway board: 17-?=11 | |
271. | Takeaway board: 15-?=11 | |
272. | Takeaway board: 18-? = 12 | |
273. | Takeaway board: 16-? = 13 | |
274. | Takeaway board: 19-? = 14 | |
275. | Hide and seek: 10 trolls - 5 | |
276. | Hide and seek: 14 trolls - 5 | |
277. | Hide and seek: 11 trolls - 5 | |
278. | 12 + 7 = 19 - so what else is true? | |
279. | True or False?: 12 - 6 = 6 | |
280. | True or False?: 9 - 4 = 5 | |
281. | True or False?: 17 - 2 = 15 | |
282. | Subtraction Chain - 21-4 =?-1= 16 | |
283. | Subtraction Chain - 29-8=21-3=? | |
284. | Subtraction Chain - 26-5=21-4=? | |
285. | Taking ten: 46-10 | |
286. | Taking ten: 72-10 | |
287. | Taking ten: 39-10 | |
288. | Taking ten: 55-10 | |
289. | Taking ten: 81-10 | |
290. | Subtract 8 (from 16, 15, 12) | |
291. | Subtract 6 (from 12, 11, 13) | |
292. | Subtract 5 (from 14, 11, 8) | |
293. | Subtract 7 (from 14, 16, 11) | |
294. | Subtract 4 (from 10, 12, 8) | |
295. | True or False?: 16 - 8 = 8 | |
296. | True or False?: 16 - 9 = 7 | |
297. | True or False?: 19 - 13 = 6 | |
298. | Subtract 8 from 17, 13 & 11 | |
299. | Subtract 6 from 13, 15 & 11 | |
300. | Subtract 9 from 12, 15 & 17 | |
301. | Build A Total - number sequence, 15 | |
302. | Build A Total - number sequence, 24 | |
303. | Build A Total - number sequence, 11 | |
304. | What Comes Next? - 10 less than 12 | |
305. | What Comes Next? - 10 more than 13 | |
306. | What Comes Next? - 10 more than 12 | |
307. | Enid the Elephant's Equations - equivalent to 8 + 4 | |
308. | Enid the Elephant's Equations - equivalent to 6 + 5 | |
309. | Enid the Elephant's Equations - equivalent to 7 + 7 | |
310. | Number Quest - find 1 number to complete 2 number sentences | |
311. | Sign Scramble - complete 2 number sentences using given numbers | |
312. | Number Quest - find 1 number to complete 2 number sentences | |
313. | Number Quest - find 1 number to complete 2 number sentences | |
314. | Card games: 6 + 4 = ?, 2 + 3 = ? | |
315. | Card games: 7 + 4 = ?, 9 + 8 = ? | |
316. | Card games: 7 + 9 = ?, 8 + 3 = ? | |
317. | Card games: 5 + 8 = ?, 7 + 9 = ? | |
318. | Card games: 9 + 9 = ?, 8 + 6 = ? | |
319. | At the Zoo: 4 + 3 + 4 | |
320. | Who's going to Waterworld? 2+4+3+8 | |
321. | Who's going to Waterworld? 4+4+2+5 | |
322. | Who's going to Waterworld? 2+3+3+10 | |
323. | Who's going to Waterworld? 7+3+2+3 | |
324. | Who's going to Waterworld? 5+4+5+3 | |
325. | Card games: Which is higher, 5 + 4 or 3 + 7? | |
326. | Card games: Which is higher, 3 + 5 or 4 + 8? | |
327. | Card games: Which is higher, 5 + 9 or 6 + 4? | |
328. | Card games: Which is higher, 4 + 6 or 9 + 3? | |
329. | Card games: Which is lower, 9 + 3 or 6 + 7? | |
330. | Card games: Which is lower, 2 + 6 or 4 + 2? | |
331. | Who's going to Waterworld? 2+4+3+3 | |
332. | Mary Goes Shopping: $5 + $1 | |
333. | Edward Goes Shopping: $4 + $2 | |
334. | Emma Goes Shopping: $3 + $2 | |
335. | Jean Goes Shopping: $5 + $3 | |
336. | Reuben Goes Shopping: $4 + $2 | |
337. | Rachelle Goes Shopping: $1 + $4 | |
338. | Joshua Goes Shopping: $3 + $1 | |
339. | Emma Goes Shopping: $3 + $2 | |
340. | Card Tricks: Red 4 + Black 9 | |
341. | Card Tricks: Red 3 + Black 7 | |
342. | Card Tricks: Red 6 + Black 5 | |
343. | Card Tricks: Red 9 + Black 6 | |
344. | Card Tricks: Red 8 + Black 7 | |
345. | Clinton Goes Shopping: $2 + $2 |