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
- 1.111 − 82 =
- 2.69 − 32 =
- 3.1011 − 984 =
- 4.95 − 67 =
- 5.320 − 279 =
- 6.507 − 488 =
- 7.87 − 61 =
- 8.511 − 491 =
- 9.69 − 28 =
- 10.91 − 70 =
- 11.101 − 90 =
- 12.522 − 476 =
- 13.1007 − 978 =
- 14.53 − 35 =
- 15.84 − 58 =
- 16.312 − 281 =
- 17.55 − 40 =
- 18.307 − 295 =
- 19.319 − 289 =
- 20.314 − 290 =
- 21.224 − 189 =
- 22.507 − 475 =
- 23.227 − 183 =
- 24.1020 − 977 =
- 25.516 − 484 =
- 26.210 − 198 =
- 27.88 − 75 =
- 28.82 − 74 =
- 29.114 − 90 =
- 30.118 − 97 =
- 31.528 − 492 =
- 32.1004 − 982 =
- 33.87 − 62 =
- 34.201 − 179 =
- 35.330 − 298 =
- 36.62 − 43 =
- 37.202 − 180 =
- 38.123 − 98 =
- 39.67 − 29 =
- 40.110 − 62 =
Answer key
- 29
- 37
- 27
- 28
- 41
- 19
- 26
- 20
- 41
- 21
- 11
- 46
- 29
- 18
- 26
- 31
- 15
- 12
- 30
- 24
- 35
- 32
- 44
- 43
- 32
- 12
- 13
- 8
- 24
- 21
- 36
- 22
- 25
- 22
- 32
- 19
- 22
- 25
- 38
- 48
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths