Calculating
1. | 0.1 less, 0.1 more than 19.9 | |
2. | Adding tens: 24 + ? = 64, 24 + 50 = ? | |
3. | Adding tens: 57 + ? = 97, 57 + 20 = ? | |
4. | Number detectives: 25+?, 35+?, 55+? =100 | |
5. | Number detectives: 5+?, 45+?, 15+?=100 | |
6. | 100 Zone: 70 + 40 = ? 90 + ? = 110, ? + 80 = 110 | |
7. | 100 Zone: 60 + 80 = ? 90 + ? = 140, ? + 100 = 140 | |
8. | 100 Zone: 70 + 80 = ? 100 + ? = 150, ? + 70 = 150 | |
9. | 100 Zone: 90 + 70 = ? 80 + ? = 160, ? + 60 = 160 | |
10. | Add it up: 58+34 | |
11. | Number detectives 485+*= 493 | |
12. | Number detectives 515+*= 523 | |
13. | Add It Up: Addition with regrouping 15+28 | |
14. | Add It Up: Addition with regrouping 29+16 | |
15. | Add It Up: Addition with regrouping 22+29 | |
16. | Add It Up: Addition with regrouping 54+28 | |
17. | Add It Up: Addition with regrouping 67+27 | |
18. | Number Detectives: 100 Pairs ? + 79 = 100 | |
19. | Number Detectives: 100 Pairs ? + 51 = 100 | |
20. | Number Detectives: 100 Pairs 63 + 37 = ? | |
21. | Number Detectives: 100 Pairs 88 + ? = 100 | |
22. | On the Board 45 + 3* = *7 | |
23. | On the Board 3* + *5 = 98 | |
24. | On the Board 4* + 42 = *9 | |
25. | On the Board 3* + 62 = *6 | |
26. | On the Board 8* + *6 = 98 | |
27. | On the Board 63 + 32 = ** | |
28. | On the Board 33 + *5 = 7* | |
29. | On the Board 63 + 17 = ** | |
30. | Add Hundreds: 600+ * = 946 | |
31. | Add Hundreds: 200+ * = 580 | |
32. | Add Hundreds: 400+ * = 963 | |
33. | Add Hundreds: 100+ * = 319 | |
34. | Add Hundreds: 300+ * = 565 | |
35. | Double up & add: Double 12, + 4, + 10 | |
36. | Double up & add: Double 13, + 3, + 10 | |
37. | Double up & add: Double 13, + 2, + 10 | |
38. | Add Hundreds: 500+246 | |
39. | Add Hundreds: 300+453 | |
40. | Add Hundreds: 800+163 | |
41. | Add Hundreds: * + 300 = 330 | |
42. | Add Hundreds: * + 200 = 241 | |
43. | Add Hundreds: * + 800 = 819 | |
44. | Add Hundreds: * + 300 = 345 | |
45. | Add Hundreds: * + 200 = 295 | |
46. | Add It Up: Addition with regrouping 63 + 27 | |
47. | Add It Up: Addition with regrouping 34 + 57 | |
48. | Add It Up: Addition with regrouping 34 + 57 | |
49. | Add It Up: Addition with regrouping 55 + 25 | |
50. | Add It Up: Addition with regrouping 28 + 43 | |
51. | Mystery number: ?+7=252 | |
52. | Mystery number: ?+6=174 | |
53. | Mystery number: ?+7=451 | |
54. | Mystery number: ?+6+163 | |
55. | Mystery number: 106+11=? | |
56. | Mystery number: 514+12=? | |
57. | Mystery number: 913+13=? | |
58. | Mystery number: 711+17=? | |
59. | Mystery number: 133+16=? | |
60. | Same or different:44-8,14+23,22+18,19+17,54-18 | |
61. | Same or different:43-7,21+17,13+22,18+16,53-17 | |
62. | On the Board: *52+10*=3*8 | |
63. | On the Board: *8*+91=*78 | |
64. | On the Board: *46+*2=43* | |
65. | On the Board: *6*+73=5*6 | |
66. | On the Board: *4+7*=100 | |
67. | On the Board: *4+3*=100 | |
68. | Double up and add: Double 40, +4, +10 | |
69. | Double up and add: Double 30, +8, +10 | |
70. | Double up and add: Double 35, +9, +10 | |
71. | Double up and add: Double 37, +4, +10 | |
72. | Double up and add: Double 22, +8, +10 | |
73. | Adding Tens: 235+50 =? | |
74. | Adding Tens: 338+50=? | |
75. | Adding Tens: 562+30=? | |
76. | Adding Tens: ?+30=492 | |
77. | Complem. add/subtract: 136+419=555 | |
78. | Complem. add/subtract: 216+84=300 | |
79. | Complem. add/subtract: 112+32=144 | |
80. | Complem. add/subtract: 125+14=139 | |
81. | Complem. add/subtract: 105+24=129 | |
82. | Complem. add/subtract: 210+14=224 | |
83. | Add it up: Addition with regrouping 863+59 | |
84. | Add it up: Addition with regrouping 347+56 | |
85. | Add it up: Addition with regrouping 723+89 | |
86. | Hundreds and hundreds: 42?+3?8=79? | |
87. | Hundreds and hundreds: 17?+?23=2?7 | |
88. | Scoring decimal points: 1*.2+2.7=*9.* | |
89. | Use The pattern 1.2+1.3, 10.2+10.3, 102+103 | |
90. | Take it away: Subtraction with decomposition 63-9 | |
91. | Take it away: Subtraction with decomposition 51-5 | |
92. | Take it away: Subtraction with decomposition 34-8 | |
93. | Take it away: Subtraction with decomposition 41-6 | |
94. | Take it away: Subtraction with decomposition 63-9 | |
95. | Take it away: Subtraction with decomposition 45-7 | |
96. | Take it away: Subtraction with decomposition 56-9 | |
97. | Take it away: Subtraction with decomposition 45-9 | |
98. | Take it away: Subtraction with decomposition 52 - 36 | |
99. | Take it away: Subtraction with decomposition 43 - 26 | |
100. | Take it away: Subtraction with decomposition 46 - 28 | |
101. | Take it away: Subtraction with decomposition 71 - 52 | |
102. | Hundreds takeaway 697-**=614 | |
103. | Hundreds takeaway 457-**=425 | |
104. | Hundreds takeaway 596-**=543 | |
105. | Hundreds takeaway 997-**=971 | |
106. | Subtracting tens: 86 - ? = 56 | |
107. | Subtracting tens: 94 - ? = 24 | |
108. | The Mysteries of 50! 50-35,12,6 | |
109. | The Mysteries of 50! 50-16,21,30 | |
110. | Subtraction chains: ?-12-7-6=65, ?-11-6-13=50 | |
111. | Subtraction chains: ?-11-10-12, ?-8-11-4=7 | |
112. | Subtraction chains: ?-10-11-9, 50-12-8-7=23 | |
113. | Subtraction chains: ?-11-8-10, ?-9-6-7=34 | |
114. | Subtraction chains: ?-7-9-12, ?-12-5-11 | |
115. | Take Tens: 67-?=47,430-70=? | |
116. | Take Tens: 71-?=21,250-30=? | |
117. | Take Tens: 66-?=36,360-80=? | |
118. | Take Tens: 94-?=54,740-20=? | |
119. | Take Tens: 89-?=19,460-50=? | |
120. | Take Tens: 86-?=26,170-40=? | |
121. | Linh at the sweet shop: $2-(30c+5x10c) | |
122. | Take it away 352-18=334 | |
123. | Take it away 472-46=426 | |
124. | Hundreds Takeaway: 6*2-32* = *21 | |
125. | Hundreds Takeaway: **2-43*=362 | |
126. | Hundreds Takeaway: *1*-5*4=414 | |
127. | Hundreds Takeaway: *8*-2*2=132 | |
128. | Hundreds Takeaway: 5*9-35*=*11 | |
129. | Decimal Drops: 54.* - 37.7 = *7.1 | |
130. | Take it away 271-138 | |
131. | Take it away 692-459 | |
132. | Take it away 942-513 | |
133. | Take it away 794-387 | |
134. | Take it away 583-228 | |
135. | Number detectives: 5x*=30 5x*=35 | |
136. | Same or different: Click all boxes with the answer 18. | |
137. | Same or different: Click all boxes with the answer 16. | |
138. | Same or different: Click all boxes with the answer 15. | |
139. | Hit the big times: 12 x 2 | |
140. | Hit the big times: 14 x 2 | |
141. | Hit the big times: 11 x 5 | |
142. | Hit the big times: 13 x 2 | |
143. | Hit the big times: 12 x 4 | |
144. | Hit the big times: 12 x 3 | |
145. | Use the pattern: 3 x 15 = 3 x 10 + 3 x 5 | |
146. | Number Detectives: 2x3x?=24 | |
147. | Number Detectives: 5x6x?=90 | |
148. | Complementary Pairs: 116 x 3 = 348 | |
149. | Times Machine: Write the correct multiplier into the times machine | |
150. | Maree at the sweet shop: 20 x 30c + 5 x 25c | |
151. | Division chain: 100 / 2 / 5 = ? | |
152. | Division Chain: 30 / 5 = ? / 2 = ? | |
153. | Division Chain: 40 / 5 = ? / 4 = ? | |
154. | Number detectives: 80 / ? = 40 | |
155. | Number detectives: 60 / ? = 20 | |
156. | My Fair Sharer: put the correct setting into the fair sharer | |
157. | My Fair Sharer: put the correct setting into the fair sharer | |
158. | My Fair Sharer: Put the correct setting into the fair sharer | |
159. | My Fair Sharer: put the correct setting into the fair sharer | |
160. | My Fair Sharer: put the correct setting into the fair sharer | |
161. | Division Chain - 45 / 5 = ? / 3 = ? | |
162. | Division Chain - 20 / 5 = ? / 2 = ? | |
163. | Division Chain - 32 / 4 = ? / 2 = ? | |
164. | Division Chain - 80 / 10 = ? / 4 = ? | |
165. | Division Chain - 30 / 3 ? / 10 = ? | |
166. | My Fair Sharer - 50, 40, 20 / 2 | |
167. | My Fair Sharer - 60, 90, 30 / 2 | |
168. | My Fair Sharer - 12, 27, 18 / 3 | |
169. | My Fair Sharer - 40, 16, 28 / 4 | |
170. | My Fair Sharer - 25, 15, 40 / 5 | |
171. | My Fair Sharer - write the correct setting on the fair sharer | |
172. | My Fair Sharer - write the correct setting on the fair sharer | |
173. | My Fair Sharer: 100, 60, 40 / 2 | |
174. | Fair Sharer: put the correct division setting into the fair sharer | |
175. | Fair Sharer: put the correct division setting into the fair sharer | |
176. | Fair Sharer: put the correct division setting into the fair sharer | |
177. | Fair Sharer: put the correct division setting into the fair sharer | |
178. | My Fair Sharer: write the answers after each number has been divided | |
179. | My Fair Sharer: write the answers after each number has been divided | |
180. | My Fair Sharer: write the answers after each number has been divided | |
181. | Number detectives: ? / 8=90 | |
182. | My Fair Sharer: 44 / 11 = 16 / 4 = 28 / 7 = 36 / 9 = ? | |
183. | My Fair Sharer: 100 / 20 = 25 / 5 = 650 / 130 = 40 / 8 = ? | |
184. | My Fair Sharer: Divide 56, 6, 14, 10 by 7 | |
185. | Divide and multiply: 56 / 7 | |
186. | Divide and multiply: 63 / 9 | |
187. | Divide and multiply: 36 / 4 | |
188. | Which Operation? - 95*5=90 | |
189. | Which Operation? - 63*28 = 91 | |
190. | Build A Total - number sequence, 45 | |
191. | Build A Total - number sequence, 30 | |
192. | Use the pattern: 5 x 15 = 5 x 10 + 5 x 5 | |
193. | Use the pattern: 2 x 26 = 2 x 20 + 2 x 6 | |
194. | Complementary Pairs: 402 x 2 = 804 | |
195. | Complementary Pairs: 102 x 6 = 612 | |
196. | Complementary Pairs: 241 x 2 = 482 | |
197. | Complementary Pairs: 313 x 3 = 939 | |
198. | Same or different: Click the box where the answer is different | |
199. | Tenths Tournament: 1- 0.6 | |
200. | Tenths Tournament: 1- 0.5 | |
201. | Tenths Tournament: 6.1 + 0.8 | |
202. | Build A Total - number sequence, 25 | |
203. | Build A Total - number sequence, 35 |