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
- 1.303 − 294 =
- 2.1017 − 989 =
- 3.107 − 96 =
- 4.303 − 277 =
- 5.510 − 485 =
- 6.88 − 61 =
- 7.310 − 295 =
- 8.77 − 46 =
- 9.71 − 34 =
- 10.524 − 491 =
- 11.124 − 83 =
- 12.315 − 295 =
- 13.60 − 46 =
- 14.97 − 78 =
- 15.122 − 89 =
- 16.519 − 490 =
- 17.311 − 278 =
- 18.1007 − 998 =
- 19.109 − 60 =
- 20.510 − 486 =
- 21.223 − 195 =
- 22.304 − 285 =
- 23.71 − 42 =
- 24.100 − 65 =
- 25.309 − 293 =
- 26.89 − 74 =
- 27.114 − 84 =
- 28.501 − 495 =
- 29.121 − 97 =
- 30.1024 − 996 =
- 31.222 − 183 =
- 32.523 − 477 =
- 33.529 − 497 =
- 34.83 − 67 =
- 35.315 − 285 =
- 36.515 − 477 =
- 37.220 − 182 =
- 38.81 − 65 =
- 39.204 − 194 =
- 40.101 − 73 =
Answer key
- 9
- 28
- 11
- 26
- 25
- 27
- 15
- 31
- 37
- 33
- 41
- 20
- 14
- 19
- 33
- 29
- 33
- 9
- 49
- 24
- 28
- 19
- 29
- 35
- 16
- 15
- 30
- 6
- 24
- 28
- 39
- 46
- 32
- 16
- 30
- 38
- 38
- 16
- 10
- 28
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths