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
- 1.529 − 479 =
- 2.529 − 489 =
- 3.212 − 198 =
- 4.1030 − 998 =
- 5.1007 − 981 =
- 6.124 − 91 =
- 7.530 − 498 =
- 8.98 − 63 =
- 9.109 − 60 =
- 10.505 − 485 =
- 11.85 − 71 =
- 12.223 − 191 =
- 13.510 − 498 =
- 14.98 − 78 =
- 15.505 − 491 =
- 16.211 − 195 =
- 17.204 − 192 =
- 18.506 − 489 =
- 19.514 − 489 =
- 20.308 − 275 =
- 21.80 − 40 =
- 22.1005 − 976 =
- 23.223 − 195 =
- 24.217 − 181 =
- 25.59 − 29 =
- 26.319 − 282 =
- 27.212 − 184 =
- 28.80 − 38 =
- 29.1022 − 996 =
- 30.86 − 56 =
- 31.63 − 34 =
- 32.59 − 38 =
- 33.1015 − 987 =
- 34.208 − 186 =
- 35.83 − 78 =
- 36.69 − 43 =
- 37.57 − 38 =
- 38.316 − 290 =
- 39.202 − 186 =
- 40.81 − 72 =
Answer key
- 50
- 40
- 14
- 32
- 26
- 33
- 32
- 35
- 49
- 20
- 14
- 32
- 12
- 20
- 14
- 16
- 12
- 17
- 25
- 33
- 40
- 29
- 28
- 36
- 30
- 37
- 28
- 42
- 26
- 30
- 29
- 21
- 28
- 22
- 5
- 26
- 19
- 26
- 16
- 9
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths