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
- 1.509 − 496 =
- 2.63 − 36 =
- 3.114 − 78 =
- 4.507 − 488 =
- 5.66 − 25 =
- 6.60 − 27 =
- 7.83 − 59 =
- 8.307 − 290 =
- 9.214 − 179 =
- 10.127 − 91 =
- 11.56 − 44 =
- 12.318 − 283 =
- 13.526 − 484 =
- 14.105 − 72 =
- 15.524 − 493 =
- 16.211 − 192 =
- 17.121 − 96 =
- 18.1023 − 976 =
- 19.326 − 283 =
- 20.126 − 90 =
- 21.1008 − 989 =
- 22.228 − 192 =
- 23.311 − 277 =
- 24.1014 − 991 =
- 25.85 − 68 =
- 26.519 − 486 =
- 27.527 − 495 =
- 28.218 − 194 =
- 29.86 − 69 =
- 30.509 − 482 =
- 31.310 − 292 =
- 32.101 − 76 =
- 33.94 − 62 =
- 34.213 − 194 =
- 35.124 − 97 =
- 36.303 − 287 =
- 37.58 − 45 =
- 38.502 − 478 =
- 39.97 − 72 =
- 40.1008 − 997 =
Answer key
- 13
- 27
- 36
- 19
- 41
- 33
- 24
- 17
- 35
- 36
- 12
- 35
- 42
- 33
- 31
- 19
- 25
- 47
- 43
- 36
- 19
- 36
- 34
- 23
- 17
- 33
- 32
- 24
- 17
- 27
- 18
- 25
- 32
- 19
- 27
- 16
- 13
- 24
- 25
- 11
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths