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
- 1.117 − 83 =
- 2.59 − 27 =
- 3.89 − 75 =
- 4.322 − 287 =
- 5.80 − 43 =
- 6.205 − 182 =
- 7.60 − 30 =
- 8.92 − 65 =
- 9.93 − 55 =
- 10.507 − 486 =
- 11.56 − 44 =
- 12.95 − 76 =
- 13.55 − 35 =
- 14.507 − 481 =
- 15.507 − 483 =
- 16.1006 − 977 =
- 17.55 − 42 =
- 18.120 − 76 =
- 19.214 − 192 =
- 20.509 − 480 =
- 21.307 − 298 =
- 22.507 − 475 =
- 23.122 − 98 =
- 24.82 − 58 =
- 25.111 − 93 =
- 26.501 − 486 =
- 27.526 − 488 =
- 28.104 − 73 =
- 29.101 − 82 =
- 30.103 − 75 =
- 31.1012 − 997 =
- 32.323 − 277 =
- 33.301 − 292 =
- 34.55 − 27 =
- 35.82 − 69 =
- 36.314 − 290 =
- 37.1002 − 995 =
- 38.1018 − 975 =
- 39.206 − 175 =
- 40.327 − 287 =
Answer key
- 34
- 32
- 14
- 35
- 37
- 23
- 30
- 27
- 38
- 21
- 12
- 19
- 20
- 26
- 24
- 29
- 13
- 44
- 22
- 29
- 9
- 32
- 24
- 24
- 18
- 15
- 38
- 31
- 19
- 28
- 15
- 46
- 9
- 28
- 13
- 24
- 7
- 43
- 31
- 40
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths