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

Grade 1 Subtraction Test Answer Key: questions 1–5

Question 1: Crossed-out counters (2 points)

(a) \(12-5=7\)

(b) 7 counters

Scoring: 1 point for a sentence that starts with 12 and takes away 5. 1 point for 7.

Question 2: Find the differences (2 points)

(a) \(6+9=15\). 9

(b) \(7+6=13\). 6

Scoring: 1 point for each correct difference.

Question 3: Hop back (2 points)

(a) \(13-5=8\)

(b) 8

Scoring: 1 point for a sentence that starts at 13, takes away 5, and equals 8. 1 point for 8.

Question 4: Missing part (2 points)

(a) \(7+8=15\). 8

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

Scoring: 1 point for 8. 1 point for 8 as the difference.

Question 5: Fact family (2 points)

\(16-9=7\) and \(16-7=9\)

Scoring: 1 point for each correct subtraction sentence. Each sentence must start with 16.

Grade 1 Subtraction Test Answer Key: questions 6–8

Question 6: Stickers (3 points)

(a) 6 stickers

(b) 6 stickers

(c) \(14-8=6\)

Scoring: 1 point for each correct answer in (a) and (b). 1 point for a sentence that starts with 14, takes away 8, and equals 6.

Question 7: Crayons (3 points)

(a) \(16-9=7\)

(b) 7 crayons

(c) \(7+9=16\)

Scoring: 1 point for the sentence. 1 point for 7 crayons. 1 point for an addition sentence with 7, 9, and 16.

Question 8: Missing numbers (4 points)

1. \(5+7=12\). 7
2. \(8+6=14\). 14
3. \(8+9=17\). 9
4. \(9+5=14\). 14 apples

Scoring: 1 point for each correct answer.

Scoring summary

How to use this grade 1 subtraction test answer key

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

⬇ Download the Grade 1 Subtraction Within 20 test answer key (PDF, 83 KB)

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