Adding within 100
Grade 2 · Level 1 · Sheet 1the answers
Free from tutor.in4me.app · 2.NBT.B.5, 2.OA.A.1 · Five minutes a day online, and the difficulty follows your child.
- 1.38+51=?
- 2.41+36=?
- 3.95+3=?
- 4.6+21=?
- 5.50+19=?
- 6.31+50=?
- 7.62+12=?
- 8.63+32=?
- 9.27+32=?
- 10.18+1=?
- 11.93+4=?
- 12.82+10=?
Show the answer key
- 1.89
- 2.77
- 3.98
- 4.27
- 5.69
- 6.81
- 7.74
- 8.95
- 9.59
- 10.19
- 11.97
- 12.92
Answer key · Adding within 100 · Level 1 · Sheet 1
- 1.89
- 2.77
- 3.98
- 4.27
- 5.69
- 6.81
- 7.74
- 8.95
- 9.59
- 10.19
- 11.97
- 12.92
The mistakes behind most wrong answers
A wrong answer in adding 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.
- 92+6=?
The answer is 98. A child who answers 86 probably took away instead of adding.
- 40+57=?
The answer is 97. A child who answers 98 probably counted one too many or too few.
- 18+10=?
The answer is 28. A child who answers 18 probably answered with one of the numbers shown.
- 86+14=?
The answer is 100. A child who answers 0 probably lost track of the ten.
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.