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
- 1.1003 − 989 =
- 2.214 − 192 =
- 3.524 − 498 =
- 4.206 − 182 =
- 5.1006 − 992 =
- 6.54 − 47 =
- 7.312 − 279 =
- 8.530 − 480 =
- 9.529 − 488 =
- 10.108 − 60 =
- 11.53 − 25 =
- 12.1026 − 992 =
- 13.308 − 296 =
- 14.1004 − 997 =
- 15.91 − 61 =
- 16.73 − 47 =
- 17.95 − 63 =
- 18.304 − 295 =
- 19.82 − 66 =
- 20.310 − 296 =
- 21.215 − 181 =
- 22.117 − 96 =
- 23.322 − 287 =
- 24.81 − 62 =
- 25.130 − 94 =
- 26.507 − 486 =
- 27.318 − 289 =
- 28.1005 − 979 =
- 29.326 − 288 =
- 30.1001 − 979 =
- 31.218 − 193 =
- 32.514 − 484 =
- 33.209 − 181 =
- 34.105 − 55 =
- 35.507 − 493 =
- 36.207 − 175 =
- 37.206 − 193 =
- 38.1005 − 996 =
- 39.116 − 94 =
- 40.1005 − 997 =
Answer key
- 14
- 22
- 26
- 24
- 14
- 7
- 33
- 50
- 41
- 48
- 28
- 34
- 12
- 7
- 30
- 26
- 32
- 9
- 16
- 14
- 34
- 21
- 35
- 19
- 36
- 21
- 29
- 26
- 38
- 22
- 25
- 30
- 28
- 50
- 14
- 32
- 13
- 9
- 22
- 8
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths