Subtraction Trick Worksheet
The fast method (Shift both): How much makes the second number round? 68 needs 2 to make 70. Add that amount to BOTH numbers. Take away the round number.
NameDateTime takenScore ___ / 40
- 1.320 − 26 =
- 2.130 − 96 =
- 3.200 − 39 =
- 4.149 − 98 =
- 5.557 − 17 =
- 6.309 − 37 =
- 7.268 − 29 =
- 8.158 − 49 =
- 9.543 − 87 =
- 10.500 − 67 =
- 11.319 − 49 =
- 12.129 − 98 =
- 13.299 − 39 =
- 14.228 − 56 =
- 15.442 − 47 =
- 16.212 − 88 =
- 17.485 − 38 =
- 18.177 − 56 =
- 19.168 − 19 =
- 20.390 − 56 =
- 21.163 − 79 =
- 22.509 − 37 =
- 23.263 − 78 =
- 24.241 − 99 =
- 25.445 − 26 =
- 26.591 − 78 =
- 27.298 − 56 =
- 28.420 − 87 =
- 29.467 − 86 =
- 30.152 − 66 =
- 31.470 − 68 =
- 32.237 − 29 =
- 33.270 − 49 =
- 34.467 − 19 =
- 35.572 − 16 =
- 36.158 − 66 =
- 37.481 − 87 =
- 38.164 − 98 =
- 39.77 − 37 =
- 40.224 − 86 =
Answer key
- 294
- 34
- 161
- 51
- 540
- 272
- 239
- 109
- 456
- 433
- 270
- 31
- 260
- 172
- 395
- 124
- 447
- 121
- 149
- 334
- 84
- 472
- 185
- 142
- 419
- 513
- 242
- 333
- 381
- 86
- 402
- 208
- 221
- 448
- 556
- 92
- 394
- 66
- 40
- 138
Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths