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
- 1.96 − 70 =
- 2.108 − 81 =
- 3.518 − 487 =
- 4.62 − 30 =
- 5.216 − 179 =
- 6.100 − 60 =
- 7.63 − 34 =
- 8.51 − 28 =
- 9.1015 − 978 =
- 10.302 − 292 =
- 11.1026 − 978 =
- 12.87 − 71 =
- 13.68 − 41 =
- 14.509 − 490 =
- 15.62 − 33 =
- 16.123 − 76 =
- 17.75 − 25 =
- 18.84 − 74 =
- 19.101 − 78 =
- 20.58 − 25 =
- 21.527 − 483 =
- 22.201 − 181 =
- 23.107 − 87 =
- 24.1002 − 994 =
- 25.228 − 175 =
- 26.126 − 96 =
- 27.329 − 291 =
- 28.1024 − 982 =
- 29.92 − 57 =
- 30.128 − 96 =
- 31.526 − 488 =
- 32.115 − 77 =
- 33.1004 − 981 =
- 34.91 − 73 =
- 35.73 − 45 =
- 36.329 − 287 =
- 37.528 − 488 =
- 38.77 − 43 =
- 39.91 − 65 =
- 40.58 − 38 =
Answer key
- 26
- 27
- 31
- 32
- 37
- 40
- 29
- 23
- 37
- 10
- 48
- 16
- 27
- 19
- 29
- 47
- 50
- 10
- 23
- 33
- 44
- 20
- 20
- 8
- 53
- 30
- 38
- 42
- 35
- 32
- 38
- 38
- 23
- 18
- 28
- 42
- 40
- 34
- 26
- 20
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths