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