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 − 92 =
- 2.58 − 44 =
- 3.317 − 278 =
- 4.1009 − 977 =
- 5.70 − 42 =
- 6.130 − 91 =
- 7.103 − 75 =
- 8.54 − 30 =
- 9.64 − 42 =
- 10.209 − 181 =
- 11.223 − 188 =
- 12.70 − 37 =
- 13.327 − 296 =
- 14.1006 − 976 =
- 15.209 − 192 =
- 16.504 − 477 =
- 17.117 − 86 =
- 18.504 − 498 =
- 19.1029 − 991 =
- 20.1025 − 997 =
- 21.1016 − 978 =
- 22.314 − 295 =
- 23.214 − 195 =
- 24.1016 − 996 =
- 25.505 − 479 =
- 26.87 − 70 =
- 27.220 − 182 =
- 28.207 − 180 =
- 29.1023 − 994 =
- 30.96 − 71 =
- 31.104 − 60 =
- 32.116 − 80 =
- 33.52 − 28 =
- 34.130 − 98 =
- 35.1017 − 993 =
- 36.81 − 77 =
- 37.512 − 492 =
- 38.78 − 33 =
- 39.121 − 91 =
- 40.80 − 40 =
Answer key
- 25
- 14
- 39
- 32
- 28
- 39
- 28
- 24
- 22
- 28
- 35
- 33
- 31
- 30
- 17
- 27
- 31
- 6
- 38
- 28
- 38
- 19
- 19
- 20
- 26
- 17
- 38
- 27
- 29
- 25
- 44
- 36
- 24
- 32
- 24
- 4
- 20
- 45
- 30
- 40
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths