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
- 1.129 − 79 =
- 2.105 − 69 =
- 3.74 − 35 =
- 4.501 − 484 =
- 5.529 − 487 =
- 6.80 − 31 =
- 7.524 − 493 =
- 8.205 − 180 =
- 9.317 − 298 =
- 10.220 − 183 =
- 11.313 − 284 =
- 12.504 − 496 =
- 13.1005 − 995 =
- 14.322 − 280 =
- 15.81 − 58 =
- 16.317 − 294 =
- 17.78 − 27 =
- 18.201 − 196 =
- 19.123 − 98 =
- 20.202 − 194 =
- 21.90 − 55 =
- 22.318 − 293 =
- 23.1003 − 996 =
- 24.504 − 476 =
- 25.1001 − 993 =
- 26.1007 − 981 =
- 27.506 − 488 =
- 28.97 − 67 =
- 29.115 − 96 =
- 30.320 − 290 =
- 31.105 − 80 =
- 32.69 − 45 =
- 33.58 − 40 =
- 34.99 − 64 =
- 35.107 − 83 =
- 36.98 − 77 =
- 37.522 − 496 =
- 38.218 − 193 =
- 39.311 − 288 =
- 40.311 − 293 =
Answer key
- 50
- 36
- 39
- 17
- 42
- 49
- 31
- 25
- 19
- 37
- 29
- 8
- 10
- 42
- 23
- 23
- 51
- 5
- 25
- 8
- 35
- 25
- 7
- 28
- 8
- 26
- 18
- 30
- 19
- 30
- 25
- 24
- 18
- 35
- 24
- 21
- 26
- 25
- 23
- 18
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths