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
- 1.60 − 41 =
- 2.218 − 194 =
- 3.1011 − 983 =
- 4.222 − 194 =
- 5.124 − 77 =
- 6.1020 − 984 =
- 7.90 − 70 =
- 8.321 − 291 =
- 9.512 − 489 =
- 10.1014 − 995 =
- 11.1002 − 982 =
- 12.224 − 184 =
- 13.85 − 76 =
- 14.95 − 76 =
- 15.94 − 64 =
- 16.112 − 81 =
- 17.327 − 294 =
- 18.99 − 57 =
- 19.504 − 496 =
- 20.62 − 29 =
- 21.84 − 71 =
- 22.207 − 183 =
- 23.103 − 60 =
- 24.513 − 477 =
- 25.76 − 37 =
- 26.520 − 485 =
- 27.101 − 81 =
- 28.318 − 298 =
- 29.1006 − 997 =
- 30.53 − 38 =
- 31.1025 − 981 =
- 32.522 − 497 =
- 33.509 − 496 =
- 34.108 − 89 =
- 35.523 − 496 =
- 36.511 − 481 =
- 37.318 − 297 =
- 38.71 − 37 =
- 39.310 − 293 =
- 40.75 − 31 =
Answer key
- 19
- 24
- 28
- 28
- 47
- 36
- 20
- 30
- 23
- 19
- 20
- 40
- 9
- 19
- 30
- 31
- 33
- 42
- 8
- 33
- 13
- 24
- 43
- 36
- 39
- 35
- 20
- 20
- 9
- 15
- 44
- 25
- 13
- 19
- 27
- 30
- 21
- 34
- 17
- 44
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths