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
- 1.313 − 289 =
- 2.316 − 275 =
- 3.110 − 73 =
- 4.109 − 68 =
- 5.1029 − 985 =
- 6.106 − 96 =
- 7.126 − 94 =
- 8.1029 − 980 =
- 9.55 − 41 =
- 10.99 − 75 =
- 11.1007 − 993 =
- 12.520 − 498 =
- 13.95 − 74 =
- 14.1004 − 993 =
- 15.326 − 278 =
- 16.1016 − 990 =
- 17.505 − 494 =
- 18.127 − 96 =
- 19.100 − 77 =
- 20.102 − 83 =
- 21.1011 − 983 =
- 22.123 − 96 =
- 23.83 − 62 =
- 24.1006 − 985 =
- 25.130 − 77 =
- 26.106 − 87 =
- 27.216 − 196 =
- 28.226 − 195 =
- 29.206 − 179 =
- 30.316 − 280 =
- 31.54 − 37 =
- 32.1003 − 989 =
- 33.215 − 188 =
- 34.328 − 290 =
- 35.223 − 179 =
- 36.113 − 78 =
- 37.1028 − 989 =
- 38.95 − 77 =
- 39.518 − 494 =
- 40.1027 − 976 =
Answer key
- 24
- 41
- 37
- 41
- 44
- 10
- 32
- 49
- 14
- 24
- 14
- 22
- 21
- 11
- 48
- 26
- 11
- 31
- 23
- 19
- 28
- 27
- 21
- 21
- 53
- 19
- 20
- 31
- 27
- 36
- 17
- 14
- 27
- 38
- 44
- 35
- 39
- 18
- 24
- 51
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths