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
- 1.524 − 497 =
- 2.99 − 78 =
- 3.60 − 47 =
- 4.75 − 29 =
- 5.225 − 186 =
- 6.105 − 78 =
- 7.209 − 192 =
- 8.68 − 33 =
- 9.102 − 73 =
- 10.1025 − 994 =
- 11.94 − 66 =
- 12.524 − 481 =
- 13.501 − 498 =
- 14.71 − 36 =
- 15.105 − 56 =
- 16.1014 − 977 =
- 17.107 − 68 =
- 18.124 − 93 =
- 19.1004 − 997 =
- 20.104 − 75 =
- 21.527 − 495 =
- 22.510 − 498 =
- 23.323 − 297 =
- 24.116 − 91 =
- 25.1005 − 996 =
- 26.521 − 492 =
- 27.80 − 38 =
- 28.71 − 45 =
- 29.230 − 195 =
- 30.509 − 493 =
- 31.105 − 74 =
- 32.106 − 74 =
- 33.211 − 195 =
- 34.520 − 483 =
- 35.59 − 28 =
- 36.122 − 89 =
- 37.128 − 91 =
- 38.308 − 283 =
- 39.1024 − 990 =
- 40.55 − 34 =
Answer key
- 27
- 21
- 13
- 46
- 39
- 27
- 17
- 35
- 29
- 31
- 28
- 43
- 3
- 35
- 49
- 37
- 39
- 31
- 7
- 29
- 32
- 12
- 26
- 25
- 9
- 29
- 42
- 26
- 35
- 16
- 31
- 32
- 16
- 37
- 31
- 33
- 37
- 25
- 34
- 21
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths