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
- 1.54 − 38 =
- 2.308 − 280 =
- 3.82 − 74 =
- 4.108 − 57 =
- 5.120 − 80 =
- 6.501 − 477 =
- 7.109 − 79 =
- 8.503 − 497 =
- 9.106 − 71 =
- 10.76 − 44 =
- 11.70 − 43 =
- 12.68 − 27 =
- 13.82 − 65 =
- 14.99 − 62 =
- 15.57 − 27 =
- 16.96 − 72 =
- 17.80 − 30 =
- 18.1026 − 977 =
- 19.217 − 194 =
- 20.105 − 98 =
- 21.97 − 64 =
- 22.115 − 76 =
- 23.302 − 289 =
- 24.314 − 285 =
- 25.1020 − 983 =
- 26.502 − 496 =
- 27.1024 − 993 =
- 28.63 − 30 =
- 29.102 − 66 =
- 30.93 − 55 =
- 31.54 − 31 =
- 32.528 − 494 =
- 33.1028 − 985 =
- 34.120 − 86 =
- 35.1004 − 998 =
- 36.1029 − 994 =
- 37.1027 − 975 =
- 38.205 − 179 =
- 39.1030 − 994 =
- 40.216 − 184 =
Answer key
- 16
- 28
- 8
- 51
- 40
- 24
- 30
- 6
- 35
- 32
- 27
- 41
- 17
- 37
- 30
- 24
- 50
- 49
- 23
- 7
- 33
- 39
- 13
- 29
- 37
- 6
- 31
- 33
- 36
- 38
- 23
- 34
- 43
- 34
- 6
- 35
- 52
- 26
- 36
- 32
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths