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
- 1.211 − 190 =
- 2.100 − 68 =
- 3.52 − 42 =
- 4.1023 − 980 =
- 5.104 − 74 =
- 6.102 − 73 =
- 7.92 − 67 =
- 8.314 − 282 =
- 9.69 − 29 =
- 10.86 − 76 =
- 11.223 − 183 =
- 12.501 − 475 =
- 13.223 − 185 =
- 14.79 − 48 =
- 15.515 − 496 =
- 16.76 − 46 =
- 17.507 − 498 =
- 18.107 − 61 =
- 19.503 − 492 =
- 20.330 − 277 =
- 21.95 − 56 =
- 22.207 − 197 =
- 23.99 − 63 =
- 24.67 − 29 =
- 25.209 − 178 =
- 26.320 − 281 =
- 27.58 − 38 =
- 28.227 − 176 =
- 29.530 − 490 =
- 30.98 − 70 =
- 31.1007 − 996 =
- 32.1010 − 977 =
- 33.310 − 277 =
- 34.306 − 288 =
- 35.1016 − 985 =
- 36.73 − 35 =
- 37.209 − 184 =
- 38.229 − 198 =
- 39.78 − 42 =
- 40.104 − 75 =
Answer key
- 21
- 32
- 10
- 43
- 30
- 29
- 25
- 32
- 40
- 10
- 40
- 26
- 38
- 31
- 19
- 30
- 9
- 46
- 11
- 53
- 39
- 10
- 36
- 38
- 31
- 39
- 20
- 51
- 40
- 28
- 11
- 33
- 33
- 18
- 31
- 38
- 25
- 31
- 36
- 29
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths