Taking away within 100

Grade 2 · Level 3 · Sheet 1

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the answers

Name Date

Free from tutor.in4me.app · 2.NBT.B.5, 2.NBT.A.4, 2.OA.A.1 · Five minutes a day online, and the difficulty follows your child.

1.
?−52=18
2.
?−25=17
3.
60−?=30
4.
?−2=5
5.
?−19=32
6.
?−23=9
7.
6−?=2
8.
47−?=9
9.
?−3=22
10.
?−58=19
11.
94−?=52
12.
80−?=25

Show the answer key

1.70
2.42
3.30
4.7
5.51
6.32
7.4
8.38
9.25
10.77
11.42
12.55

The mistakes behind most wrong answers

A wrong answer in taking away within 100 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.

93−?=27
The answer is 66. A child who answers 159 probably took away instead of adding.
?−3=19
The answer is 22. A child who answers 19 probably started counting from the wrong number.
?−33=66
The answer is 99. A child who answers 98 probably counted one too many or too few.
66−?=33
The answer is 33. A child who answers 66 probably answered with one of the numbers shown.

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.

Answer key · Taking away within 100 · Level 3 · Sheet 1

The mistakes behind most wrong answers