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
- 1.317 − 289 =
- 2.1002 − 990 =
- 3.516 − 498 =
- 4.326 − 286 =
- 5.507 − 483 =
- 6.75 − 26 =
- 7.73 − 34 =
- 8.223 − 179 =
- 9.306 − 287 =
- 10.1024 − 998 =
- 11.224 − 179 =
- 12.67 − 29 =
- 13.510 − 495 =
- 14.312 − 281 =
- 15.225 − 184 =
- 16.201 − 185 =
- 17.62 − 29 =
- 18.324 − 285 =
- 19.211 − 195 =
- 20.302 − 286 =
- 21.320 − 296 =
- 22.51 − 47 =
- 23.1020 − 988 =
- 24.215 − 196 =
- 25.308 − 288 =
- 26.79 − 29 =
- 27.1015 − 981 =
- 28.1008 − 976 =
- 29.116 − 81 =
- 30.62 − 35 =
- 31.65 − 39 =
- 32.1007 − 976 =
- 33.507 − 491 =
- 34.218 − 182 =
- 35.1020 − 979 =
- 36.108 − 66 =
- 37.102 − 78 =
- 38.116 − 94 =
- 39.528 − 476 =
- 40.94 − 77 =
Answer key
- 28
- 12
- 18
- 40
- 24
- 49
- 39
- 44
- 19
- 26
- 45
- 38
- 15
- 31
- 41
- 16
- 33
- 39
- 16
- 16
- 24
- 4
- 32
- 19
- 20
- 50
- 34
- 32
- 35
- 27
- 26
- 31
- 16
- 36
- 41
- 42
- 24
- 22
- 52
- 17
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths