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
- 1.102 − 96 =
- 2.323 − 286 =
- 3.502 − 489 =
- 4.1002 − 983 =
- 5.75 − 33 =
- 6.510 − 493 =
- 7.309 − 292 =
- 8.1007 − 995 =
- 9.530 − 493 =
- 10.215 − 195 =
- 11.73 − 28 =
- 12.511 − 475 =
- 13.85 − 64 =
- 14.211 − 197 =
- 15.85 − 72 =
- 16.217 − 181 =
- 17.202 − 187 =
- 18.209 − 179 =
- 19.74 − 43 =
- 20.220 − 178 =
- 21.96 − 65 =
- 22.312 − 298 =
- 23.112 − 98 =
- 24.223 − 197 =
- 25.109 − 85 =
- 26.103 − 70 =
- 27.1026 − 995 =
- 28.513 − 488 =
- 29.213 − 183 =
- 30.206 − 198 =
- 31.203 − 177 =
- 32.58 − 29 =
- 33.511 − 493 =
- 34.101 − 81 =
- 35.54 − 31 =
- 36.230 − 189 =
- 37.84 − 73 =
- 38.202 − 185 =
- 39.320 − 287 =
- 40.304 − 279 =
Answer key
- 6
- 37
- 13
- 19
- 42
- 17
- 17
- 12
- 37
- 20
- 45
- 36
- 21
- 14
- 13
- 36
- 15
- 30
- 31
- 42
- 31
- 14
- 14
- 26
- 24
- 33
- 31
- 25
- 30
- 8
- 26
- 29
- 18
- 20
- 23
- 41
- 11
- 17
- 33
- 25
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths