Grade 1 · Math · Addition
Grade 1 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 =
9.
14 + 2 =
10.
1 + 12 =
11.
3 + 14 =
12.
3 + 17 =
13.
2 + 18 =
14.
9 + 6 =
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.