Order of Operations (PEMDAS) — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. 24 ÷ 6 + 3 × 2 = 10.
Division and multiplication first: 24 ÷ 6 = 4 and 3 × 2 = 6. Then add: 4 + 6 = 10.
2. 15 - 3 × 4 + 1 = 4.
Multiply first: 3 × 4 = 12. Then left to right: 15 − 12 + 1 = 3 + 1 = 4.
3. (20 - 5) ÷ 3 = 5.
Parentheses: (20 − 5) = 15. Divide: 15 ÷ 3 = 5.
4. 36 ÷ (3 + 6) × 2 = 8.
Parentheses: (3 + 6) = 9. Then left to right: 36 ÷ 9 = 4; 4 × 2 = 8.
5. 14 - 8 ÷ 2 + 3 = 13.
Division first: 8 ÷ 2 = 4. Then left to right: 14 − 4 + 3 = 10 + 3 = 13.
6. (7 + 5) × 3 - 16 = 20.
Parentheses: (7 + 5) = 12. Multiply: 12 × 3 = 36. Subtract: 36 − 16 = 20.
7. 30 ÷ 5 - 2 + 8 = 12.
Divide first: 30 ÷ 5 = 6. Then left to right: 6 − 2 + 8 = 4 + 8 = 12.
8. 4 × 6 ÷ 3 + 5 = 13.
Multiply and divide left to right: 4 × 6 = 24; 24 ÷ 3 = 8. Then add: 8 + 5 = 13.
9. (18 - 6) ÷ (2 + 1) = 4.
Both parentheses: (18 − 6) = 12 and (2 + 1) = 3. Divide: 12 ÷ 3 = 4.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
10 - 6 ÷ 2
→ 7
12
(10 - 6) ÷ 2
→ 2
20
3 × 8 - 4
→ 20
7
3 × (8 - 4)
→ 12
2
10−6÷2=10−3=7; (10−6)÷2=4÷2=2; 3×8−4=24−4=20; 3×(8−4)=3×4=12.