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
- 1.515 − 494 =
- 2.130 − 85 =
- 3.324 − 291 =
- 4.101 − 85 =
- 5.201 − 192 =
- 6.107 − 81 =
- 7.329 − 292 =
- 8.67 − 44 =
- 9.511 − 475 =
- 10.1003 − 991 =
- 11.119 − 86 =
- 12.62 − 28 =
- 13.326 − 290 =
- 14.508 − 475 =
- 15.58 − 31 =
- 16.125 − 91 =
- 17.89 − 69 =
- 18.1014 − 987 =
- 19.122 − 83 =
- 20.109 − 75 =
- 21.123 − 79 =
- 22.524 − 486 =
- 23.224 − 187 =
- 24.521 − 491 =
- 25.317 − 291 =
- 26.530 − 483 =
- 27.120 − 89 =
- 28.117 − 87 =
- 29.220 − 196 =
- 30.129 − 82 =
- 31.316 − 276 =
- 32.110 − 72 =
- 33.524 − 490 =
- 34.112 − 94 =
- 35.53 − 35 =
- 36.106 − 77 =
- 37.105 − 59 =
- 38.127 − 78 =
- 39.75 − 43 =
- 40.214 − 190 =
Answer key
- 21
- 45
- 33
- 16
- 9
- 26
- 37
- 23
- 36
- 12
- 33
- 34
- 36
- 33
- 27
- 34
- 20
- 27
- 39
- 34
- 44
- 38
- 37
- 30
- 26
- 47
- 31
- 30
- 24
- 47
- 40
- 38
- 34
- 18
- 18
- 29
- 46
- 49
- 32
- 24
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths