Addition Within 20: Grade 1 Math Test Answer Key – PDF Download

Grade 1 Addition Test Answer Key: questions 1–5

Question 1: Counters (2 points)

(a) \(6+7\)

(b) \(6+6=12\), and one more is 13. 13

Scoring: 1 point for 6 and 7 written with a plus sign. 1 point for 13.

Question 2: Find the sums (2 points)

(a) \(9+1=10\), then \(10+6=16\). 16

(b) 12

Scoring: 1 point for each correct sum.

Question 3: Hops on a number line (2 points)

(a) She started at 5, hopped 3, then hopped 5. \(5+3+5=13\)

(b) 13

Scoring: 1 point for a sentence with 5, 3, and 5 that equals 13. 1 point for stopping at 13.

Question 4: Switch the numbers (2 points)

(a) \(9+7\)

(b) \(9+7=16\). 16

Scoring: 1 point for 9 + 7. 1 point for 16.

Question 5: Three numbers (2 points)

(a) \(6+4=10\), then \(10+8=18\). 18

(b) \(3+7=10\), then \(10+9=19\). 19

Scoring: 1 point for each correct sum.

Grade 1 Addition Test Answer Key: questions 6–8

Question 6: Cookie sale (3 points)

(a) \(9+8=17\)

(b) 17 cookies

(c) \(8+9=17\)

Scoring: 1 point for a correct sentence. 1 point for 17 with the word cookies. 1 point for the switched sentence.

Question 7: Blocks (3 points)

(a) \(8+7\): \(7+7=14\), and one more is 15. 15 blocks

(b) \(8+7=15\)

(c) \(9+6=15\), so 6 blue blocks.

Scoring: 1 point for 15 blocks. 1 point for a correct sentence. 1 point for 6 blue blocks.

Question 8: Missing numbers (4 points)

1. \(8+7=15\). 7
2. \(8+6=14\). 8
3. \(9+8=17\). 8
4. \(5+6=11\). 6

Scoring: 1 point for each correct missing number.

Scoring summary

How to use this grade 1 addition test answer key

Use this grade 1 addition test answer key to score the test fairly and to see which skills need more practice.

⬇ Download the Grade 1 Addition Within 20 test answer key (PDF, 85 KB)

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