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
- 1.213 − 193 =
- 2.517 − 489 =
- 3.52 − 44 =
- 4.212 − 177 =
- 5.110 − 96 =
- 6.1021 − 979 =
- 7.304 − 283 =
- 8.208 − 185 =
- 9.514 − 491 =
- 10.111 − 75 =
- 11.510 − 484 =
- 12.87 − 73 =
- 13.302 − 296 =
- 14.228 − 197 =
- 15.95 − 56 =
- 16.1022 − 977 =
- 17.224 − 185 =
- 18.523 − 489 =
- 19.95 − 69 =
- 20.79 − 28 =
- 21.51 − 42 =
- 22.107 − 79 =
- 23.1009 − 982 =
- 24.314 − 278 =
- 25.66 − 41 =
- 26.113 − 87 =
- 27.70 − 38 =
- 28.101 − 70 =
- 29.516 − 497 =
- 30.52 − 41 =
- 31.107 − 81 =
- 32.85 − 63 =
- 33.104 − 81 =
- 34.226 − 187 =
- 35.323 − 279 =
- 36.76 − 29 =
- 37.513 − 489 =
- 38.57 − 29 =
- 39.1006 − 997 =
- 40.130 − 79 =
Answer key
- 20
- 28
- 8
- 35
- 14
- 42
- 21
- 23
- 23
- 36
- 26
- 14
- 6
- 31
- 39
- 45
- 39
- 34
- 26
- 51
- 9
- 28
- 27
- 36
- 25
- 26
- 32
- 31
- 19
- 11
- 26
- 22
- 23
- 39
- 44
- 47
- 24
- 28
- 9
- 51
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths