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
- 1.323 − 277 =
- 2.1013 − 997 =
- 3.127 − 98 =
- 4.74 − 28 =
- 5.62 − 33 =
- 6.1019 − 996 =
- 7.228 − 178 =
- 8.107 − 58 =
- 9.315 − 284 =
- 10.84 − 67 =
- 11.502 − 475 =
- 12.306 − 286 =
- 13.303 − 278 =
- 14.83 − 68 =
- 15.307 − 291 =
- 16.228 − 195 =
- 17.1002 − 985 =
- 18.107 − 86 =
- 19.1022 − 981 =
- 20.517 − 498 =
- 21.1007 − 995 =
- 22.312 − 293 =
- 23.305 − 281 =
- 24.100 − 71 =
- 25.84 − 77 =
- 26.83 − 57 =
- 27.215 − 196 =
- 28.503 − 495 =
- 29.104 − 64 =
- 30.214 − 196 =
- 31.105 − 89 =
- 32.84 − 63 =
- 33.204 − 192 =
- 34.502 − 497 =
- 35.59 − 39 =
- 36.509 − 492 =
- 37.110 − 76 =
- 38.53 − 33 =
- 39.509 − 489 =
- 40.521 − 495 =
Answer key
- 46
- 16
- 29
- 46
- 29
- 23
- 50
- 49
- 31
- 17
- 27
- 20
- 25
- 15
- 16
- 33
- 17
- 21
- 41
- 19
- 12
- 19
- 24
- 29
- 7
- 26
- 19
- 8
- 40
- 18
- 16
- 21
- 12
- 5
- 20
- 17
- 34
- 20
- 20
- 26
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths