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
- 1.118 − 93 =
- 2.101 − 94 =
- 3.212 − 196 =
- 4.325 − 283 =
- 5.101 − 62 =
- 6.226 − 194 =
- 7.88 − 77 =
- 8.57 − 46 =
- 9.99 − 62 =
- 10.109 − 78 =
- 11.77 − 36 =
- 12.80 − 35 =
- 13.530 − 493 =
- 14.315 − 292 =
- 15.525 − 493 =
- 16.514 − 477 =
- 17.513 − 492 =
- 18.65 − 47 =
- 19.110 − 97 =
- 20.305 − 288 =
- 21.304 − 296 =
- 22.1009 − 979 =
- 23.108 − 69 =
- 24.55 − 36 =
- 25.510 − 496 =
- 26.217 − 191 =
- 27.109 − 79 =
- 28.313 − 291 =
- 29.509 − 485 =
- 30.308 − 295 =
- 31.519 − 475 =
- 32.124 − 83 =
- 33.95 − 65 =
- 34.73 − 42 =
- 35.1022 − 994 =
- 36.73 − 40 =
- 37.91 − 71 =
- 38.1016 − 980 =
- 39.89 − 71 =
- 40.205 − 190 =
Answer key
- 25
- 7
- 16
- 42
- 39
- 32
- 11
- 11
- 37
- 31
- 41
- 45
- 37
- 23
- 32
- 37
- 21
- 18
- 13
- 17
- 8
- 30
- 39
- 19
- 14
- 26
- 30
- 22
- 24
- 13
- 44
- 41
- 30
- 31
- 28
- 33
- 20
- 36
- 18
- 15
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths