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
- 1.114 − 75 =
- 2.518 − 493 =
- 3.72 − 45 =
- 4.55 − 30 =
- 5.87 − 62 =
- 6.203 − 177 =
- 7.1016 − 989 =
- 8.101 − 78 =
- 9.55 − 45 =
- 10.57 − 44 =
- 11.511 − 480 =
- 12.108 − 67 =
- 13.95 − 76 =
- 14.121 − 98 =
- 15.110 − 67 =
- 16.301 − 281 =
- 17.101 − 71 =
- 18.107 − 56 =
- 19.78 − 26 =
- 20.100 − 66 =
- 21.224 − 193 =
- 22.111 − 95 =
- 23.1017 − 977 =
- 24.501 − 492 =
- 25.208 − 177 =
- 26.102 − 84 =
- 27.505 − 483 =
- 28.99 − 55 =
- 29.106 − 55 =
- 30.514 − 481 =
- 31.128 − 93 =
- 32.123 − 79 =
- 33.302 − 292 =
- 34.530 − 491 =
- 35.54 − 45 =
- 36.228 − 176 =
- 37.108 − 65 =
- 38.101 − 68 =
- 39.1028 − 989 =
- 40.216 − 198 =
Answer key
- 39
- 25
- 27
- 25
- 25
- 26
- 27
- 23
- 10
- 13
- 31
- 41
- 19
- 23
- 43
- 20
- 30
- 51
- 52
- 34
- 31
- 16
- 40
- 9
- 31
- 18
- 22
- 44
- 51
- 33
- 35
- 44
- 10
- 39
- 9
- 52
- 43
- 33
- 39
- 18
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths