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
- 1.99 − 75 =
- 2.316 − 275 =
- 3.103 − 92 =
- 4.87 − 55 =
- 5.215 − 185 =
- 6.87 − 77 =
- 7.64 − 29 =
- 8.325 − 295 =
- 9.59 − 37 =
- 10.1007 − 976 =
- 11.61 − 40 =
- 12.317 − 286 =
- 13.514 − 479 =
- 14.217 − 189 =
- 15.226 − 186 =
- 16.57 − 38 =
- 17.78 − 31 =
- 18.321 − 281 =
- 19.108 − 60 =
- 20.89 − 76 =
- 21.1020 − 997 =
- 22.1017 − 991 =
- 23.1027 − 977 =
- 24.103 − 97 =
- 25.111 − 95 =
- 26.77 − 25 =
- 27.75 − 35 =
- 28.102 − 76 =
- 29.77 − 32 =
- 30.315 − 280 =
- 31.208 − 193 =
- 32.314 − 287 =
- 33.503 − 481 =
- 34.1030 − 997 =
- 35.87 − 61 =
- 36.510 − 487 =
- 37.74 − 38 =
- 38.67 − 35 =
- 39.310 − 292 =
- 40.322 − 290 =
Answer key
- 24
- 41
- 11
- 32
- 30
- 10
- 35
- 30
- 22
- 31
- 21
- 31
- 35
- 28
- 40
- 19
- 47
- 40
- 48
- 13
- 23
- 26
- 50
- 6
- 16
- 52
- 40
- 26
- 45
- 35
- 15
- 27
- 22
- 33
- 26
- 23
- 36
- 32
- 18
- 32
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths