This grade 1 addition within 20 test checks addition within 20 in 45 minutes, with 8 questions for a total of 20 points.
This 30-minute test checks adding within 20. It has 8 questions worth 20 points in all. Children write number sentences, use a number line, add three numbers, and solve story problems (1.OA.A.1, 1.OA.B.3, 1.OA.C.6). Read each question aloud if needed.
- Grade: Grade 1
- Chapter: Addition Within 20
- Common Core: 1.OA.A.1, 1.OA.B.3, 1.OA.C.6, 1.OA.C.5
- Time: 30 minutes
- Total: 20 points (Question 1: 2 pts; Question 2: 2 pts; Question 3: 2 pts; Question 4: 2 pts; Question 5: 2 pts; Question 6: 3 pts; Question 7: 3 pts; Question 8: 4 pts)
Grade 1 Addition Within 20 Test: questions 1–5
Question 1: Counters (2 points)
Look at the picture.
- Write an addition expression with the number of gray counters and the number of white counters. (1 point)
- Find the total. (1 point)
Question 2: Find the sums (2 points)
- Find \(9+7\). (1 point)
- Find \(6+6\). (1 point)
Question 3: Hops on a number line (2 points)
Mei hopped on the number line.
- Write an addition sentence for her hops. (1 point)
- Where did she stop? (1 point)
Question 4: Switch the numbers (2 points)
- Write \(7+9\) with the numbers in the other order. (1 point)
- Find the sum. (1 point)
Question 5: Three numbers (2 points)
- Find \(6+4+8\). (1 point)
- Find \(3+9+7\). (1 point)
Grade 1 Addition Within 20 Test: questions 6–8
Question 6: Cookie sale (3 points)
Priya sold 9 cookies on Saturday. She sold 8 cookies on Sunday.
- Write an addition sentence to show the story. (1 point)
- How many cookies did she sell in all? (1 point)
- Write a different addition sentence with the same numbers. (1 point)
Question 7: Blocks (3 points)
Aisha has 8 red blocks and 7 blue blocks.
- How many blocks does Aisha have in all? (1 point)
- Write the addition sentence. (1 point)
- Noah has 15 blocks. Nine are red and the rest are blue. How many blue blocks does he have? (1 point)
Question 8: Missing numbers (4 points)
Write the missing number.
- \(8+\text{ __ }=15\) (1 point)
- \(\text{ __ }+6=14\) (1 point)
- \(9+\text{ __ }=17\) (1 point)
- \(5+\text{ __ }=11\) (1 point)
How to use this grade 1 addition within 20 test
Take this grade 1 addition within 20 test without notes, then grade it with the test answer key out of 20 points.
See every chapter on the Grade 1 math page.




