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
- 1.101 − 94 =
- 2.211 − 184 =
- 3.310 − 280 =
- 4.121 − 78 =
- 5.323 − 292 =
- 6.205 − 178 =
- 7.504 − 485 =
- 8.103 − 59 =
- 9.67 − 29 =
- 10.118 − 87 =
- 11.68 − 42 =
- 12.80 − 42 =
- 13.1002 − 981 =
- 14.64 − 39 =
- 15.307 − 297 =
- 16.1006 − 991 =
- 17.309 − 285 =
- 18.105 − 56 =
- 19.85 − 75 =
- 20.223 − 190 =
- 21.1023 − 977 =
- 22.104 − 65 =
- 23.224 − 198 =
- 24.91 − 69 =
- 25.1011 − 997 =
- 26.128 − 80 =
- 27.112 − 92 =
- 28.105 − 77 =
- 29.218 − 182 =
- 30.1029 − 994 =
- 31.68 − 43 =
- 32.201 − 189 =
- 33.225 − 181 =
- 34.97 − 56 =
- 35.1014 − 991 =
- 36.78 − 35 =
- 37.211 − 178 =
- 38.302 − 275 =
- 39.1029 − 988 =
- 40.222 − 196 =
Answer key
- 7
- 27
- 30
- 43
- 31
- 27
- 19
- 44
- 38
- 31
- 26
- 38
- 21
- 25
- 10
- 15
- 24
- 49
- 10
- 33
- 46
- 39
- 26
- 22
- 14
- 48
- 20
- 28
- 36
- 35
- 25
- 12
- 44
- 41
- 23
- 43
- 33
- 27
- 41
- 26
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths