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
- 1.99 − 69 =
- 2.205 − 26 =
- 3.62 − 18 =
- 4.95 − 77 =
- 5.469 − 78 =
- 6.292 − 56 =
- 7.141 − 46 =
- 8.528 − 76 =
- 9.542 − 37 =
- 10.563 − 99 =
- 11.422 − 48 =
- 12.232 − 56 =
- 13.156 − 68 =
- 14.171 − 59 =
- 15.112 − 49 =
- 16.418 − 59 =
- 17.150 − 19 =
- 18.379 − 48 =
- 19.234 − 58 =
- 20.433 − 98 =
- 21.402 − 86 =
- 22.414 − 86 =
- 23.396 − 28 =
- 24.130 − 57 =
- 25.444 − 27 =
- 26.108 − 56 =
- 27.507 − 98 =
- 28.92 − 28 =
- 29.198 − 96 =
- 30.110 − 46 =
- 31.138 − 86 =
- 32.350 − 99 =
- 33.128 − 36 =
- 34.475 − 16 =
- 35.303 − 96 =
- 36.316 − 97 =
- 37.331 − 47 =
- 38.309 − 29 =
- 39.311 − 16 =
- 40.271 − 88 =
Answer key
- 30
- 179
- 44
- 18
- 391
- 236
- 95
- 452
- 505
- 464
- 374
- 176
- 88
- 112
- 63
- 359
- 131
- 331
- 176
- 335
- 316
- 328
- 368
- 73
- 417
- 52
- 409
- 64
- 102
- 64
- 52
- 251
- 92
- 459
- 207
- 219
- 284
- 280
- 295
- 183
Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths