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
- 1.326 − 286 =
- 2.102 − 75 =
- 3.312 − 292 =
- 4.330 − 285 =
- 5.130 − 86 =
- 6.69 − 44 =
- 7.67 − 30 =
- 8.95 − 63 =
- 9.306 − 284 =
- 10.306 − 288 =
- 11.313 − 293 =
- 12.93 − 57 =
- 13.520 − 476 =
- 14.326 − 289 =
- 15.519 − 494 =
- 16.317 − 286 =
- 17.94 − 69 =
- 18.1006 − 993 =
- 19.72 − 40 =
- 20.67 − 42 =
- 21.54 − 33 =
- 22.218 − 175 =
- 23.216 − 175 =
- 24.308 − 295 =
- 25.1015 − 979 =
- 26.527 − 493 =
- 27.521 − 486 =
- 28.90 − 78 =
- 29.317 − 285 =
- 30.57 − 41 =
- 31.76 − 41 =
- 32.104 − 75 =
- 33.330 − 294 =
- 34.119 − 78 =
- 35.1018 − 990 =
- 36.528 − 477 =
- 37.124 − 90 =
- 38.1002 − 977 =
- 39.224 − 189 =
- 40.55 − 42 =
Answer key
- 40
- 27
- 20
- 45
- 44
- 25
- 37
- 32
- 22
- 18
- 20
- 36
- 44
- 37
- 25
- 31
- 25
- 13
- 32
- 25
- 21
- 43
- 41
- 13
- 36
- 34
- 35
- 12
- 32
- 16
- 35
- 29
- 36
- 41
- 28
- 51
- 34
- 25
- 35
- 13
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths