Subtraction by Counting Up Worksheet
How to do it in your head (Count up): Start at the smaller number. Jump to the next ten, then the next hundred, then to the bigger number. Add up all the jumps.
NameDateTime takenScore ___ / 40
- 1.506 − 479 =
- 2.509 − 498 =
- 3.302 − 297 =
- 4.304 − 289 =
- 5.92 − 76 =
- 6.520 − 475 =
- 7.506 − 489 =
- 8.64 − 28 =
- 9.51 − 46 =
- 10.515 − 493 =
- 11.107 − 71 =
- 12.85 − 59 =
- 13.110 − 90 =
- 14.313 − 285 =
- 15.121 − 94 =
- 16.324 − 278 =
- 17.57 − 33 =
- 18.74 − 45 =
- 19.103 − 93 =
- 20.525 − 486 =
- 21.512 − 495 =
- 22.218 − 193 =
- 23.1008 − 998 =
- 24.124 − 93 =
- 25.303 − 290 =
- 26.329 − 292 =
- 27.504 − 492 =
- 28.1030 − 977 =
- 29.309 − 279 =
- 30.329 − 296 =
- 31.302 − 296 =
- 32.128 − 88 =
- 33.526 − 486 =
- 34.306 − 292 =
- 35.307 − 297 =
- 36.521 − 485 =
- 37.306 − 280 =
- 38.1009 − 979 =
- 39.527 − 484 =
- 40.113 − 75 =
Answer key
- 27
- 11
- 5
- 15
- 16
- 45
- 17
- 36
- 5
- 22
- 36
- 26
- 20
- 28
- 27
- 46
- 24
- 29
- 10
- 39
- 17
- 25
- 10
- 31
- 13
- 37
- 12
- 53
- 30
- 33
- 6
- 40
- 40
- 14
- 10
- 36
- 26
- 30
- 43
- 38
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths