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
- 1.101 − 82 =
- 2.521 − 488 =
- 3.315 − 275 =
- 4.102 − 96 =
- 5.220 − 191 =
- 6.113 − 84 =
- 7.1016 − 997 =
- 8.221 − 178 =
- 9.95 − 68 =
- 10.329 − 284 =
- 11.63 − 35 =
- 12.302 − 279 =
- 13.106 − 85 =
- 14.503 − 493 =
- 15.226 − 194 =
- 16.58 − 31 =
- 17.301 − 297 =
- 18.67 − 44 =
- 19.306 − 281 =
- 20.109 − 75 =
- 21.109 − 85 =
- 22.506 − 485 =
- 23.1024 − 995 =
- 24.55 − 26 =
- 25.89 − 73 =
- 26.211 − 186 =
- 27.221 − 191 =
- 28.508 − 492 =
- 29.1025 − 995 =
- 30.105 − 80 =
- 31.104 − 95 =
- 32.1020 − 982 =
- 33.212 − 184 =
- 34.1029 − 988 =
- 35.502 − 488 =
- 36.69 − 47 =
- 37.225 − 190 =
- 38.322 − 275 =
- 39.1007 − 997 =
- 40.79 − 41 =
Answer key
- 19
- 33
- 40
- 6
- 29
- 29
- 19
- 43
- 27
- 45
- 28
- 23
- 21
- 10
- 32
- 27
- 4
- 23
- 25
- 34
- 24
- 21
- 29
- 29
- 16
- 25
- 30
- 16
- 30
- 25
- 9
- 38
- 28
- 41
- 14
- 22
- 35
- 47
- 10
- 38
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths