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
- 1.220 − 189 =
- 2.522 − 487 =
- 3.522 − 498 =
- 4.130 − 94 =
- 5.61 − 25 =
- 6.118 − 89 =
- 7.84 − 60 =
- 8.112 − 81 =
- 9.310 − 288 =
- 10.65 − 44 =
- 11.526 − 476 =
- 12.201 − 176 =
- 13.504 − 482 =
- 14.59 − 34 =
- 15.75 − 48 =
- 16.202 − 189 =
- 17.69 − 45 =
- 18.107 − 87 =
- 19.59 − 29 =
- 20.508 − 490 =
- 21.1001 − 987 =
- 22.1029 − 988 =
- 23.112 − 92 =
- 24.73 − 30 =
- 25.519 − 493 =
- 26.1005 − 983 =
- 27.306 − 279 =
- 28.57 − 25 =
- 29.509 − 475 =
- 30.523 − 491 =
- 31.205 − 193 =
- 32.105 − 69 =
- 33.216 − 198 =
- 34.526 − 491 =
- 35.501 − 477 =
- 36.87 − 72 =
- 37.316 − 288 =
- 38.66 − 30 =
- 39.60 − 40 =
- 40.107 − 79 =
Answer key
- 31
- 35
- 24
- 36
- 36
- 29
- 24
- 31
- 22
- 21
- 50
- 25
- 22
- 25
- 27
- 13
- 24
- 20
- 30
- 18
- 14
- 41
- 20
- 43
- 26
- 22
- 27
- 32
- 34
- 32
- 12
- 36
- 18
- 35
- 24
- 15
- 28
- 36
- 20
- 28
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths