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
- 1.527 − 486 =
- 2.529 − 481 =
- 3.96 − 59 =
- 4.109 − 69 =
- 5.520 − 475 =
- 6.522 − 494 =
- 7.87 − 61 =
- 8.228 − 194 =
- 9.59 − 45 =
- 10.1005 − 995 =
- 11.59 − 36 =
- 12.51 − 27 =
- 13.1026 − 995 =
- 14.519 − 487 =
- 15.1009 − 991 =
- 16.507 − 498 =
- 17.329 − 277 =
- 18.1009 − 990 =
- 19.1019 − 984 =
- 20.503 − 487 =
- 21.303 − 282 =
- 22.90 − 66 =
- 23.52 − 43 =
- 24.102 − 88 =
- 25.69 − 31 =
- 26.73 − 29 =
- 27.321 − 295 =
- 28.528 − 479 =
- 29.507 − 494 =
- 30.60 − 44 =
- 31.61 − 43 =
- 32.207 − 176 =
- 33.103 − 78 =
- 34.98 − 76 =
- 35.313 − 297 =
- 36.518 − 496 =
- 37.512 − 495 =
- 38.516 − 483 =
- 39.90 − 70 =
- 40.1014 − 998 =
Answer key
- 41
- 48
- 37
- 40
- 45
- 28
- 26
- 34
- 14
- 10
- 23
- 24
- 31
- 32
- 18
- 9
- 52
- 19
- 35
- 16
- 21
- 24
- 9
- 14
- 38
- 44
- 26
- 49
- 13
- 16
- 18
- 31
- 25
- 22
- 16
- 22
- 17
- 33
- 20
- 16
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths