Math · Addition and Subtraction
Find the Missing Number Within 20
Find the unknown number in addition and subtraction equations up to 20.
- 🎓 Grade 1
- 🧮 Math
- 📐 1.OA.D.8
- ❓ 24 questions
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4 + ? = 12
- A 7
- B 16
- C 9
- D 8
4 + 8 = 12
? − 6 = 2
- A 7
- B 10
- C 9
- D 8
8 − 6 = 2
13 − ? = 8
- A 5
- B 6
- C 4
- D 21
13 − 5 = 8
3 + ? = 13
- A 10
- B 9
- C 11
- D 16
3 + 10 = 13
? − 7 = 5
- A 13
- B 12
- C 11
- D 14
12 − 7 = 5
20 − ? = 10
- A 11
- B 9
- C 30
- D 10
20 − 10 = 10
3 + ? = 12
- A 10
- B 8
- C 15
- D 9
3 + 9 = 12
? − 10 = 8
- A 18
- B 20
- C 19
- D 17
18 − 10 = 8
17 − ? = 7
- A 11
- B 10
- C 24
- D 9
17 − 10 = 7
5 + ? = 14
- A 19
- B 9
- C 10
- D 8
5 + 9 = 14
? − 2 = 5
- A 6
- B 3
- C 7
- D 8
7 − 2 = 5
10 − ? = 2
- A 9
- B 12
- C 7
- D 8
10 − 8 = 2
3 + ? = 6
- A 9
- B 3
- C 4
- D 2
3 + 3 = 6
? − 5 = 4
- A 9
- B 10
- C 8
- D 11
9 − 5 = 4
9 − ? = 6
- A 2
- B 15
- C 4
- D 3
9 − 3 = 6
6 + ? = 11
- A 17
- B 6
- C 5
- D 4
6 + 5 = 11
? − 7 = 4
- A 11
- B 13
- C 12
- D 10
11 − 7 = 4
15 − ? = 8
- A 8
- B 6
- C 23
- D 7
15 − 7 = 8
5 + ? = 12
- A 6
- B 7
- C 17
- D 8
5 + 7 = 12
? − 8 = 9
- A 16
- B 17
- C 18
- D 1
17 − 8 = 9
12 − ? = 10
- A 1
- B 2
- C 3
- D 22
12 − 2 = 10
4 + ? = 9
- A 4
- B 13
- C 6
- D 5
4 + 5 = 9
? − 7 = 3
- A 11
- B 10
- C 12
- D 9
10 − 7 = 3
11 − ? = 3
- A 14
- B 8
- C 7
- D 9
11 − 8 = 3
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