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
- 1.227 − 19 =
- 2.199 − 96 =
- 3.139 − 26 =
- 4.411 − 96 =
- 5.147 − 86 =
- 6.572 − 36 =
- 7.556 − 56 =
- 8.487 − 39 =
- 9.427 − 69 =
- 10.137 − 68 =
- 11.204 − 16 =
- 12.428 − 58 =
- 13.367 − 76 =
- 14.122 − 96 =
- 15.146 − 87 =
- 16.175 − 79 =
- 17.408 − 16 =
- 18.556 − 38 =
- 19.120 − 39 =
- 20.218 − 16 =
- 21.229 − 16 =
- 22.191 − 86 =
- 23.454 − 16 =
- 24.310 − 96 =
- 25.183 − 19 =
- 26.186 − 96 =
- 27.321 − 87 =
- 28.444 − 88 =
- 29.115 − 79 =
- 30.153 − 39 =
- 31.573 − 66 =
- 32.471 − 27 =
- 33.219 − 66 =
- 34.571 − 39 =
- 35.82 − 66 =
- 36.255 − 46 =
- 37.307 − 98 =
- 38.251 − 18 =
- 39.431 − 19 =
- 40.283 − 38 =
Answer key
- 208
- 103
- 113
- 315
- 61
- 536
- 500
- 448
- 358
- 69
- 188
- 370
- 291
- 26
- 59
- 96
- 392
- 518
- 81
- 202
- 213
- 105
- 438
- 214
- 164
- 90
- 234
- 356
- 36
- 114
- 507
- 444
- 153
- 532
- 16
- 209
- 209
- 233
- 412
- 245
Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths