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
- 1.208 − 190 =
- 2.529 − 498 =
- 3.94 − 78 =
- 4.311 − 296 =
- 5.228 − 177 =
- 6.52 − 35 =
- 7.1020 − 975 =
- 8.223 − 177 =
- 9.1018 − 981 =
- 10.77 − 29 =
- 11.308 − 298 =
- 12.1005 − 976 =
- 13.519 − 487 =
- 14.109 − 76 =
- 15.71 − 31 =
- 16.1011 − 987 =
- 17.109 − 94 =
- 18.1023 − 993 =
- 19.73 − 26 =
- 20.521 − 492 =
- 21.102 − 77 =
- 22.305 − 282 =
- 23.311 − 282 =
- 24.78 − 27 =
- 25.128 − 92 =
- 26.124 − 98 =
- 27.321 − 286 =
- 28.316 − 283 =
- 29.97 − 72 =
- 30.104 − 58 =
- 31.328 − 281 =
- 32.1007 − 976 =
- 33.501 − 481 =
- 34.314 − 295 =
- 35.1009 − 995 =
- 36.524 − 486 =
- 37.1001 − 981 =
- 38.203 − 195 =
- 39.116 − 95 =
- 40.224 − 198 =
Answer key
- 18
- 31
- 16
- 15
- 51
- 17
- 45
- 46
- 37
- 48
- 10
- 29
- 32
- 33
- 40
- 24
- 15
- 30
- 47
- 29
- 25
- 23
- 29
- 51
- 36
- 26
- 35
- 33
- 25
- 46
- 47
- 31
- 20
- 19
- 14
- 38
- 20
- 8
- 21
- 26
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths