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
- 1.378 − 89 =
- 2.419 − 56 =
- 3.331 − 48 =
- 4.461 − 28 =
- 5.127 − 86 =
- 6.162 − 66 =
- 7.313 − 29 =
- 8.140 − 77 =
- 9.336 − 37 =
- 10.173 − 88 =
- 11.446 − 26 =
- 12.582 − 36 =
- 13.104 − 17 =
- 14.434 − 89 =
- 15.533 − 18 =
- 16.188 − 57 =
- 17.383 − 16 =
- 18.234 − 69 =
- 19.143 − 58 =
- 20.298 − 77 =
- 21.478 − 29 =
- 22.105 − 58 =
- 23.242 − 86 =
- 24.88 − 16 =
- 25.545 − 66 =
- 26.107 − 76 =
- 27.396 − 28 =
- 28.567 − 98 =
- 29.76 − 57 =
- 30.86 − 77 =
- 31.221 − 88 =
- 32.100 − 17 =
- 33.354 − 38 =
- 34.579 − 16 =
- 35.282 − 27 =
- 36.148 − 57 =
- 37.300 − 86 =
- 38.566 − 58 =
- 39.413 − 39 =
- 40.295 − 36 =
Answer key
- 289
- 363
- 283
- 433
- 41
- 96
- 284
- 63
- 299
- 85
- 420
- 546
- 87
- 345
- 515
- 131
- 367
- 165
- 85
- 221
- 449
- 47
- 156
- 72
- 479
- 31
- 368
- 469
- 19
- 9
- 133
- 83
- 316
- 563
- 255
- 91
- 214
- 508
- 374
- 259
Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths