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
- 1.106 − 68 =
- 2.129 − 88 =
- 3.104 − 98 =
- 4.316 − 297 =
- 5.92 − 63 =
- 6.223 − 184 =
- 7.57 − 34 =
- 8.77 − 34 =
- 9.103 − 58 =
- 10.509 − 496 =
- 11.217 − 180 =
- 12.204 − 176 =
- 13.53 − 35 =
- 14.54 − 37 =
- 15.1009 − 977 =
- 16.1007 − 977 =
- 17.312 − 275 =
- 18.105 − 55 =
- 19.64 − 41 =
- 20.521 − 487 =
- 21.507 − 494 =
- 22.327 − 290 =
- 23.503 − 487 =
- 24.107 − 90 =
- 25.508 − 496 =
- 26.57 − 42 =
- 27.69 − 31 =
- 28.1025 − 984 =
- 29.117 − 91 =
- 30.89 − 68 =
- 31.100 − 71 =
- 32.227 − 177 =
- 33.102 − 74 =
- 34.98 − 71 =
- 35.94 − 67 =
- 36.230 − 194 =
- 37.514 − 483 =
- 38.310 − 276 =
- 39.519 − 495 =
- 40.214 − 186 =
Answer key
- 38
- 41
- 6
- 19
- 29
- 39
- 23
- 43
- 45
- 13
- 37
- 28
- 18
- 17
- 32
- 30
- 37
- 50
- 23
- 34
- 13
- 37
- 16
- 17
- 12
- 15
- 38
- 41
- 26
- 21
- 29
- 50
- 28
- 27
- 27
- 36
- 31
- 34
- 24
- 28
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths