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 − 73 =
- 2.108 − 77 =
- 3.203 − 193 =
- 4.306 − 280 =
- 5.1020 − 983 =
- 6.227 − 183 =
- 7.1011 − 975 =
- 8.83 − 73 =
- 9.103 − 58 =
- 10.89 − 63 =
- 11.1005 − 996 =
- 12.220 − 193 =
- 13.71 − 33 =
- 14.54 − 36 =
- 15.207 − 197 =
- 16.515 − 497 =
- 17.88 − 75 =
- 18.101 − 76 =
- 19.1009 − 992 =
- 20.202 − 180 =
- 21.1011 − 978 =
- 22.1016 − 990 =
- 23.204 − 197 =
- 24.108 − 79 =
- 25.213 − 177 =
- 26.329 − 280 =
- 27.58 − 33 =
- 28.206 − 179 =
- 29.100 − 57 =
- 30.103 − 96 =
- 31.230 − 198 =
- 32.208 − 194 =
- 33.53 − 25 =
- 34.58 − 36 =
- 35.309 − 296 =
- 36.306 − 287 =
- 37.523 − 496 =
- 38.94 − 72 =
- 39.317 − 287 =
- 40.228 − 195 =
Answer key
- 28
- 31
- 10
- 26
- 37
- 44
- 36
- 10
- 45
- 26
- 9
- 27
- 38
- 18
- 10
- 18
- 13
- 25
- 17
- 22
- 33
- 26
- 7
- 29
- 36
- 49
- 25
- 27
- 43
- 7
- 32
- 14
- 28
- 22
- 13
- 19
- 27
- 22
- 30
- 33
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths