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
- 1.501 − 492 =
- 2.207 − 186 =
- 3.522 − 493 =
- 4.1015 − 996 =
- 5.101 − 70 =
- 6.529 − 479 =
- 7.93 − 65 =
- 8.62 − 25 =
- 9.55 − 43 =
- 10.1026 − 978 =
- 11.80 − 43 =
- 12.203 − 195 =
- 13.1029 − 993 =
- 14.116 − 81 =
- 15.1001 − 985 =
- 16.1014 − 976 =
- 17.203 − 197 =
- 18.511 − 484 =
- 19.51 − 30 =
- 20.511 − 490 =
- 21.57 − 40 =
- 22.1001 − 979 =
- 23.1011 − 994 =
- 24.509 − 483 =
- 25.516 − 482 =
- 26.79 − 30 =
- 27.220 − 180 =
- 28.315 − 293 =
- 29.1002 − 979 =
- 30.1009 − 977 =
- 31.67 − 39 =
- 32.1002 − 989 =
- 33.101 − 92 =
- 34.1030 − 990 =
- 35.101 − 78 =
- 36.222 − 180 =
- 37.108 − 77 =
- 38.326 − 288 =
- 39.66 − 42 =
- 40.127 − 84 =
Answer key
- 9
- 21
- 29
- 19
- 31
- 50
- 28
- 37
- 12
- 48
- 37
- 8
- 36
- 35
- 16
- 38
- 6
- 27
- 21
- 21
- 17
- 22
- 17
- 26
- 34
- 49
- 40
- 22
- 23
- 32
- 28
- 13
- 9
- 40
- 23
- 42
- 31
- 38
- 24
- 43
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths