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
- 1.127 − 57 =
- 2.148 − 19 =
- 3.279 − 19 =
- 4.358 − 57 =
- 5.420 − 77 =
- 6.106 − 18 =
- 7.394 − 26 =
- 8.75 − 17 =
- 9.106 − 18 =
- 10.423 − 16 =
- 11.178 − 16 =
- 12.505 − 66 =
- 13.213 − 18 =
- 14.494 − 27 =
- 15.70 − 38 =
- 16.159 − 78 =
- 17.412 − 77 =
- 18.581 − 96 =
- 19.200 − 87 =
- 20.306 − 19 =
- 21.476 − 17 =
- 22.142 − 78 =
- 23.215 − 36 =
- 24.194 − 36 =
- 25.73 − 18 =
- 26.143 − 57 =
- 27.209 − 48 =
- 28.305 − 88 =
- 29.295 − 56 =
- 30.227 − 47 =
- 31.183 − 69 =
- 32.258 − 69 =
- 33.160 − 16 =
- 34.232 − 59 =
- 35.141 − 47 =
- 36.216 − 36 =
- 37.307 − 66 =
- 38.108 − 28 =
- 39.376 − 87 =
- 40.66 − 49 =
Answer key
- 70
- 129
- 260
- 301
- 343
- 88
- 368
- 58
- 88
- 407
- 162
- 439
- 195
- 467
- 32
- 81
- 335
- 485
- 113
- 287
- 459
- 64
- 179
- 158
- 55
- 86
- 161
- 217
- 239
- 180
- 114
- 189
- 144
- 173
- 94
- 180
- 241
- 80
- 289
- 17
Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths