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
- 1.328 − 290 =
- 2.223 − 179 =
- 3.74 − 31 =
- 4.55 − 47 =
- 5.60 − 46 =
- 6.84 − 59 =
- 7.1024 − 995 =
- 8.522 − 482 =
- 9.107 − 76 =
- 10.1009 − 993 =
- 11.124 − 80 =
- 12.209 − 192 =
- 13.118 − 97 =
- 14.210 − 195 =
- 15.1015 − 990 =
- 16.69 − 36 =
- 17.326 − 284 =
- 18.525 − 490 =
- 19.1010 − 995 =
- 20.218 − 182 =
- 21.506 − 485 =
- 22.206 − 180 =
- 23.81 − 68 =
- 24.516 − 497 =
- 25.327 − 294 =
- 26.101 − 55 =
- 27.501 − 488 =
- 28.1019 − 998 =
- 29.322 − 279 =
- 30.520 − 488 =
- 31.56 − 35 =
- 32.213 − 193 =
- 33.518 − 482 =
- 34.87 − 77 =
- 35.57 − 37 =
- 36.205 − 183 =
- 37.113 − 92 =
- 38.218 − 188 =
- 39.1015 − 982 =
- 40.104 − 78 =
Answer key
- 38
- 44
- 43
- 8
- 14
- 25
- 29
- 40
- 31
- 16
- 44
- 17
- 21
- 15
- 25
- 33
- 42
- 35
- 15
- 36
- 21
- 26
- 13
- 19
- 33
- 46
- 13
- 21
- 43
- 32
- 21
- 20
- 36
- 10
- 20
- 22
- 21
- 30
- 33
- 26
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths