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
- 1.221 − 189 =
- 2.203 − 188 =
- 3.309 − 297 =
- 4.528 − 486 =
- 5.89 − 78 =
- 6.108 − 84 =
- 7.51 − 42 =
- 8.1022 − 989 =
- 9.511 − 498 =
- 10.1008 − 988 =
- 11.510 − 484 =
- 12.316 − 281 =
- 13.305 − 297 =
- 14.105 − 81 =
- 15.517 − 476 =
- 16.305 − 289 =
- 17.107 − 76 =
- 18.60 − 28 =
- 19.210 − 177 =
- 20.508 − 494 =
- 21.316 − 277 =
- 22.97 − 70 =
- 23.106 − 95 =
- 24.86 − 77 =
- 25.206 − 189 =
- 26.1021 − 998 =
- 27.205 − 198 =
- 28.326 − 293 =
- 29.227 − 175 =
- 30.512 − 489 =
- 31.107 − 56 =
- 32.115 − 81 =
- 33.515 − 494 =
- 34.62 − 40 =
- 35.226 − 186 =
- 36.1002 − 992 =
- 37.61 − 36 =
- 38.54 − 25 =
- 39.329 − 297 =
- 40.98 − 60 =
Answer key
- 32
- 15
- 12
- 42
- 11
- 24
- 9
- 33
- 13
- 20
- 26
- 35
- 8
- 24
- 41
- 16
- 31
- 32
- 33
- 14
- 39
- 27
- 11
- 9
- 17
- 23
- 7
- 33
- 52
- 23
- 51
- 34
- 21
- 22
- 40
- 10
- 25
- 29
- 32
- 38
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths