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
- 1.108 − 89 =
- 2.64 − 46 =
- 3.504 − 495 =
- 4.110 − 94 =
- 5.112 − 97 =
- 6.116 − 76 =
- 7.55 − 31 =
- 8.219 − 197 =
- 9.58 − 43 =
- 10.114 − 91 =
- 11.502 − 480 =
- 12.306 − 279 =
- 13.121 − 75 =
- 14.60 − 26 =
- 15.115 − 97 =
- 16.228 − 177 =
- 17.92 − 69 =
- 18.220 − 185 =
- 19.514 − 489 =
- 20.322 − 293 =
- 21.509 − 476 =
- 22.221 − 180 =
- 23.104 − 74 =
- 24.1008 − 980 =
- 25.1004 − 995 =
- 26.507 − 481 =
- 27.77 − 45 =
- 28.114 − 82 =
- 29.98 − 61 =
- 30.224 − 198 =
- 31.96 − 70 =
- 32.59 − 30 =
- 33.98 − 72 =
- 34.115 − 89 =
- 35.509 − 496 =
- 36.57 − 34 =
- 37.82 − 71 =
- 38.65 − 26 =
- 39.97 − 58 =
- 40.125 − 89 =
Answer key
- 19
- 18
- 9
- 16
- 15
- 40
- 24
- 22
- 15
- 23
- 22
- 27
- 46
- 34
- 18
- 51
- 23
- 35
- 25
- 29
- 33
- 41
- 30
- 28
- 9
- 26
- 32
- 32
- 37
- 26
- 26
- 29
- 26
- 26
- 13
- 23
- 11
- 39
- 39
- 36
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths