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
- 1.316 − 285 =
- 2.529 − 498 =
- 3.218 − 189 =
- 4.217 − 179 =
- 5.312 − 295 =
- 6.227 − 194 =
- 7.326 − 292 =
- 8.514 − 497 =
- 9.209 − 184 =
- 10.51 − 31 =
- 11.82 − 77 =
- 12.117 − 93 =
- 13.1018 − 985 =
- 14.80 − 31 =
- 15.94 − 78 =
- 16.1020 − 975 =
- 17.228 − 198 =
- 18.230 − 192 =
- 19.1005 − 997 =
- 20.205 − 181 =
- 21.103 − 71 =
- 22.86 − 78 =
- 23.1004 − 998 =
- 24.1026 − 990 =
- 25.130 − 76 =
- 26.516 − 493 =
- 27.501 − 479 =
- 28.61 − 48 =
- 29.314 − 281 =
- 30.76 − 43 =
- 31.90 − 62 =
- 32.1007 − 990 =
- 33.56 − 29 =
- 34.321 − 297 =
- 35.69 − 42 =
- 36.509 − 498 =
- 37.202 − 187 =
- 38.1012 − 984 =
- 39.125 − 83 =
- 40.221 − 184 =
Answer key
- 31
- 31
- 29
- 38
- 17
- 33
- 34
- 17
- 25
- 20
- 5
- 24
- 33
- 49
- 16
- 45
- 30
- 38
- 8
- 24
- 32
- 8
- 6
- 36
- 54
- 23
- 22
- 13
- 33
- 33
- 28
- 17
- 27
- 24
- 27
- 11
- 15
- 28
- 42
- 37
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths