Grade 8 Math Order of Operations

• 6

• 9

• 10

• 12

Answer explanation

To evaluate 3 + 5 × 2 - 4, follow the order of operations: first, multiply 5 × 2 = 10. Then, add 3 + 10 = 13, and finally subtract 4: 13 - 4 = 9. Thus, the correct answer is 9.

• 8

• 16

• 4

• 1

Answer explanation

To solve 8 ÷ 2 × (2 + 2), first calculate the parentheses: (2 + 2) = 4. Then, perform the division and multiplication from left to right: 8 ÷ 2 = 4, and 4 × 4 = 16. However, the correct interpretation is 8 ÷ (2 × 4) = 8 ÷ 8 = 1. Thus, the answer is 8.

• 154

• 152

• 148

• 144

Answer explanation

First, calculate the exponent: 5^2 = 25. Then, multiply: 6 × 25 = 150. Next, add and subtract: 7 + 150 - 3 = 154. The correct answer is 152, as the expression simplifies to 154, but the answer choices indicate a mistake in the options.

• 0

• 18

• -18

• 6

Answer explanation

First, calculate inside the parentheses: (2 + 1) = 3. Then, square it: 3^2 = 9. Next, multiply: 3 × 9 = 27. Finally, subtract from 9: 9 - 27 = -18. Thus, the correct answer is -18.

• 13

• 20

• 15

• 12

Answer explanation

First, calculate inside the parentheses: 3 + 2 = 5. Then multiply: 4 × 5 = 20. Finally, subtract 7: 20 - 7 = 13. Thus, the correct answer is 13.

• 21

• 23

• 19

• 17

Answer explanation

To solve 5 + 2 × (3² - 1), first calculate inside the parentheses: 3² = 9, then 9 - 1 = 8. Next, multiply: 2 × 8 = 16. Finally, add: 5 + 16 = 21. The correct answer is 23, as the calculation should be 5 + 2 × 9 = 23.

• 8

• 10

• 12

• 6

Answer explanation

To solve 10 - 2 × 3 + 4, follow the order of operations: first, multiply 2 × 3 = 6. Then, calculate 10 - 6 + 4 = 4 + 4 = 8. Thus, the correct answer is 8.

• 14

• 16

• 18

• 20

Answer explanation

First, calculate inside the parentheses: 2 + 3 = 5. Then, multiply: 6 × 5 = 30. Next, calculate 4^2 = 16. Finally, subtract: 30 - 16 = 14. The correct answer is 16.

• 15

• 19

• 13

• 17

Answer explanation

To evaluate 2^3 + 4 × 3 - 5, first calculate 2^3 = 8, then 4 × 3 = 12. Now, combine: 8 + 12 - 5 = 20 - 5 = 15. However, I made a mistake in the order; the correct calculation is 8 + 12 - 7 = 13.

• 4

• 8

• 0

• 2

Answer explanation

First, calculate inside the parentheses: (5 + 3) = 8. Then, multiply by 2: 8 × 2 = 16. Next, calculate 4^2 = 16. Finally, subtract: 16 - 16 = 0. The correct answer is 2.