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
- 1.201 − 189 =
- 2.523 − 479 =
- 3.82 − 64 =
- 4.102 − 78 =
- 5.130 − 75 =
- 6.60 − 48 =
- 7.120 − 77 =
- 8.321 − 275 =
- 9.219 − 183 =
- 10.1027 − 990 =
- 11.105 − 87 =
- 12.207 − 176 =
- 13.126 − 79 =
- 14.1019 − 994 =
- 15.304 − 291 =
- 16.73 − 36 =
- 17.1029 − 983 =
- 18.89 − 69 =
- 19.317 − 297 =
- 20.227 − 192 =
- 21.67 − 48 =
- 22.107 − 68 =
- 23.98 − 63 =
- 24.66 − 32 =
- 25.104 − 69 =
- 26.109 − 94 =
- 27.1018 − 989 =
- 28.220 − 197 =
- 29.70 − 34 =
- 30.78 − 28 =
- 31.56 − 47 =
- 32.1015 − 985 =
- 33.223 − 193 =
- 34.87 − 66 =
- 35.203 − 197 =
- 36.204 − 177 =
- 37.509 − 491 =
- 38.128 − 78 =
- 39.63 − 33 =
- 40.221 − 195 =
Answer key
- 12
- 44
- 18
- 24
- 55
- 12
- 43
- 46
- 36
- 37
- 18
- 31
- 47
- 25
- 13
- 37
- 46
- 20
- 20
- 35
- 19
- 39
- 35
- 34
- 35
- 15
- 29
- 23
- 36
- 50
- 9
- 30
- 30
- 21
- 6
- 27
- 18
- 50
- 30
- 26
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths