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
- 1.507 − 492 =
- 2.210 − 198 =
- 3.115 − 79 =
- 4.308 − 284 =
- 5.523 − 480 =
- 6.306 − 290 =
- 7.212 − 198 =
- 8.328 − 275 =
- 9.107 − 84 =
- 10.308 − 297 =
- 11.81 − 55 =
- 12.121 − 88 =
- 13.522 − 495 =
- 14.87 − 68 =
- 15.98 − 56 =
- 16.105 − 78 =
- 17.501 − 497 =
- 18.56 − 48 =
- 19.205 − 184 =
- 20.120 − 84 =
- 21.89 − 61 =
- 22.208 − 189 =
- 23.82 − 58 =
- 24.119 − 91 =
- 25.212 − 192 =
- 26.220 − 194 =
- 27.1020 − 984 =
- 28.117 − 81 =
- 29.308 − 276 =
- 30.109 − 79 =
- 31.51 − 33 =
- 32.221 − 196 =
- 33.117 − 90 =
- 34.1007 − 993 =
- 35.80 − 48 =
- 36.1006 − 977 =
- 37.69 − 30 =
- 38.55 − 32 =
- 39.119 − 82 =
- 40.502 − 485 =
Answer key
- 15
- 12
- 36
- 24
- 43
- 16
- 14
- 53
- 23
- 11
- 26
- 33
- 27
- 19
- 42
- 27
- 4
- 8
- 21
- 36
- 28
- 19
- 24
- 28
- 20
- 26
- 36
- 36
- 32
- 30
- 18
- 25
- 27
- 14
- 32
- 29
- 39
- 23
- 37
- 17
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths