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
- 1.330 − 289 =
- 2.57 − 44 =
- 3.128 − 76 =
- 4.109 − 77 =
- 5.522 − 482 =
- 6.122 − 87 =
- 7.1015 − 991 =
- 8.326 − 282 =
- 9.104 − 92 =
- 10.320 − 284 =
- 11.85 − 75 =
- 12.100 − 69 =
- 13.113 − 89 =
- 14.1028 − 978 =
- 15.61 − 48 =
- 16.53 − 36 =
- 17.57 − 45 =
- 18.220 − 192 =
- 19.318 − 283 =
- 20.221 − 192 =
- 21.73 − 45 =
- 22.502 − 495 =
- 23.209 − 184 =
- 24.316 − 279 =
- 25.329 − 280 =
- 26.85 − 60 =
- 27.108 − 93 =
- 28.61 − 39 =
- 29.93 − 64 =
- 30.1027 − 977 =
- 31.102 − 68 =
- 32.228 − 180 =
- 33.111 − 75 =
- 34.1004 − 982 =
- 35.209 − 192 =
- 36.128 − 91 =
- 37.103 − 76 =
- 38.212 − 182 =
- 39.316 − 281 =
- 40.77 − 31 =
Answer key
- 41
- 13
- 52
- 32
- 40
- 35
- 24
- 44
- 12
- 36
- 10
- 31
- 24
- 50
- 13
- 17
- 12
- 28
- 35
- 29
- 28
- 7
- 25
- 37
- 49
- 25
- 15
- 22
- 29
- 50
- 34
- 48
- 36
- 22
- 17
- 37
- 27
- 30
- 35
- 46
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths