Adding and taking away fractions
Grade 4 · Level 3 · Sheet 1the answers
Circle the answer.
Free from tutor.in4me.app · 4.NF.B.3.a, 4.NF.B.3.c, 4.NF.B.4.a, 4.NF.B.4.b · Five minutes a day online, and the difficulty follows your child.
- 1.710−410=?4101110320310
- 2.58−28=?383164878
- 3.56−36=?263621286
- 4.510−410=?110120910210
- 5.38−28=?116285818
- 6.46−26=?263621266
- 7.1112−712=?5124124241812
- 8.610−410=?2201010310210
- 9.36−26=?562616112
- 10.710−210=?520910610510
- 11.810−710=?2101510110120
- 12.28−18=?283818116
Show the answer key
- 1.310
- 2.38
- 3.26
- 4.110
- 5.18
- 6.26
- 7.412
- 8.210
- 9.16
- 10.510
- 11.110
- 12.18
Answer key · Adding and taking away fractions · Level 3 · Sheet 1
- 1.310
- 2.38
- 3.26
- 4.110
- 5.18
- 6.26
- 7.412
- 8.210
- 9.16
- 10.510
- 11.110
- 12.18
The mistakes behind most wrong answers
A wrong answer in adding and taking away fractions is rarely random. These are the ones that come up most often, each on a real problem — worth knowing before you mark a sheet, because the fix for each is different.
- 56−36=?
The answer is 26. A child who answers 212 probably changed the bottom number too.
- 46−16=?
The answer is 36. A child who answers 46 probably counted one too many or too few.
- 412−112=?
The answer is 312. A child who answers 512 probably added instead of taking away.
- 38+18=?
The answer is 48. A child who answers 28 probably took away instead of adding.
In the app, every wrong answer is matched against mistakes like these, and the weekly email tells you which one your child keeps making — in those words, not as a percentage.