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
- 1.95 − 74 =
- 2.86 − 65 =
- 3.89 − 58 =
- 4.209 − 177 =
- 5.511 − 485 =
- 6.504 − 487 =
- 7.105 − 77 =
- 8.69 − 35 =
- 9.520 − 497 =
- 10.101 − 68 =
- 11.1001 − 978 =
- 12.1006 − 988 =
- 13.1010 − 978 =
- 14.520 − 491 =
- 15.64 − 35 =
- 16.324 − 285 =
- 17.57 − 34 =
- 18.86 − 76 =
- 19.127 − 80 =
- 20.92 − 66 =
- 21.206 − 191 =
- 22.227 − 178 =
- 23.53 − 45 =
- 24.203 − 192 =
- 25.329 − 291 =
- 26.112 − 92 =
- 27.524 − 475 =
- 28.124 − 87 =
- 29.225 − 195 =
- 30.1018 − 986 =
- 31.523 − 494 =
- 32.1014 − 985 =
- 33.302 − 280 =
- 34.102 − 94 =
- 35.505 − 484 =
- 36.528 − 479 =
- 37.322 − 283 =
- 38.1026 − 980 =
- 39.55 − 47 =
- 40.106 − 87 =
Answer key
- 21
- 21
- 31
- 32
- 26
- 17
- 28
- 34
- 23
- 33
- 23
- 18
- 32
- 29
- 29
- 39
- 23
- 10
- 47
- 26
- 15
- 49
- 8
- 11
- 38
- 20
- 49
- 37
- 30
- 32
- 29
- 29
- 22
- 8
- 21
- 49
- 39
- 46
- 8
- 19
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths