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
- 1.310 − 56 =
- 2.198 − 58 =
- 3.594 − 98 =
- 4.570 − 28 =
- 5.195 − 18 =
- 6.220 − 89 =
- 7.164 − 66 =
- 8.457 − 87 =
- 9.598 − 17 =
- 10.276 − 18 =
- 11.544 − 29 =
- 12.312 − 18 =
- 13.314 − 68 =
- 14.153 − 96 =
- 15.348 − 66 =
- 16.142 − 87 =
- 17.75 − 59 =
- 18.102 − 37 =
- 19.433 − 58 =
- 20.406 − 77 =
- 21.162 − 46 =
- 22.331 − 49 =
- 23.186 − 47 =
- 24.571 − 46 =
- 25.568 − 79 =
- 26.426 − 76 =
- 27.427 − 27 =
- 28.118 − 19 =
- 29.333 − 27 =
- 30.81 − 27 =
- 31.560 − 29 =
- 32.510 − 76 =
- 33.336 − 68 =
- 34.515 − 79 =
- 35.282 − 18 =
- 36.279 − 68 =
- 37.169 − 58 =
- 38.277 − 98 =
- 39.489 − 39 =
- 40.548 − 87 =
Answer key
- 254
- 140
- 496
- 542
- 177
- 131
- 98
- 370
- 581
- 258
- 515
- 294
- 246
- 57
- 282
- 55
- 16
- 65
- 375
- 329
- 116
- 282
- 139
- 525
- 489
- 350
- 400
- 99
- 306
- 54
- 531
- 434
- 268
- 436
- 264
- 211
- 111
- 179
- 450
- 461
Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths