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
- 1.503 − 483 =
- 2.1015 − 991 =
- 3.109 − 73 =
- 4.1011 − 977 =
- 5.319 − 291 =
- 6.524 − 497 =
- 7.310 − 292 =
- 8.223 − 194 =
- 9.106 − 69 =
- 10.81 − 72 =
- 11.77 − 27 =
- 12.1012 − 981 =
- 13.505 − 493 =
- 14.220 − 180 =
- 15.123 − 82 =
- 16.313 − 284 =
- 17.110 − 97 =
- 18.82 − 73 =
- 19.206 − 184 =
- 20.108 − 75 =
- 21.530 − 487 =
- 22.509 − 490 =
- 23.105 − 97 =
- 24.513 − 495 =
- 25.329 − 287 =
- 26.512 − 478 =
- 27.1008 − 987 =
- 28.229 − 191 =
- 29.1012 − 987 =
- 30.109 − 92 =
- 31.113 − 97 =
- 32.81 − 75 =
- 33.99 − 55 =
- 34.510 − 475 =
- 35.314 − 290 =
- 36.110 − 75 =
- 37.207 − 192 =
- 38.118 − 95 =
- 39.91 − 61 =
- 40.1010 − 985 =
Answer key
- 20
- 24
- 36
- 34
- 28
- 27
- 18
- 29
- 37
- 9
- 50
- 31
- 12
- 40
- 41
- 29
- 13
- 9
- 22
- 33
- 43
- 19
- 8
- 18
- 42
- 34
- 21
- 38
- 25
- 17
- 16
- 6
- 44
- 35
- 24
- 35
- 15
- 23
- 30
- 25
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths