Grade 1 · Math · Addition
Addition Within 20 worksheet
Practice addition facts and strategies with sums through 20.
Addition Within 20
Grade 1 · On-level practice · 14 questions · Version PG-3DF-L19P
1.19 + 0 =
2.10 + 9 =
3.20 + 0 =
4.7 + 6 =
5.19 + 1 =
6.6 + 2 =
7.13 + 6 =
8.0 + 3 =
How to use this skill
Practice addition facts and strategies with sums through 20.
Worked example
8 + 7 = 15. Make ten: 8 + 2 + 5 = 15.
Common mistake
Losing part of the second addend when making ten.
Helpful hint
Look for a way to make 10 first.
More free printable versions
Choose a difficulty and print one of twenty reproducible versions. Each page contains a real worksheet preview, answers, teaching notes, and its own permanent link.