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
- 1.506 − 490 =
- 2.204 − 190 =
- 3.317 − 291 =
- 4.210 − 188 =
- 5.68 − 26 =
- 6.1003 − 998 =
- 7.1022 − 979 =
- 8.303 − 277 =
- 9.321 − 287 =
- 10.520 − 481 =
- 11.91 − 65 =
- 12.220 − 192 =
- 13.55 − 45 =
- 14.521 − 476 =
- 15.105 − 76 =
- 16.130 − 83 =
- 17.102 − 69 =
- 18.60 − 27 =
- 19.207 − 181 =
- 20.201 − 184 =
- 21.501 − 483 =
- 22.74 − 31 =
- 23.202 − 178 =
- 24.74 − 39 =
- 25.1005 − 977 =
- 26.84 − 72 =
- 27.105 − 95 =
- 28.203 − 178 =
- 29.1019 − 987 =
- 30.320 − 296 =
- 31.73 − 35 =
- 32.224 − 181 =
- 33.318 − 280 =
- 34.82 − 60 =
- 35.107 − 78 =
- 36.71 − 26 =
- 37.220 − 194 =
- 38.118 − 83 =
- 39.230 − 179 =
- 40.102 − 88 =
Answer key
- 16
- 14
- 26
- 22
- 42
- 5
- 43
- 26
- 34
- 39
- 26
- 28
- 10
- 45
- 29
- 47
- 33
- 33
- 26
- 17
- 18
- 43
- 24
- 35
- 28
- 12
- 10
- 25
- 32
- 24
- 38
- 43
- 38
- 22
- 29
- 45
- 26
- 35
- 51
- 14
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths