1. 18 - (5 + 3²) + 7 = 18 - (5 + 9) + 7 = 18 - 14 + 7 = 11
2. (15 - 9)² + (5 + 4) = 6² + 9 = 36 + 9 = 45
3. 2³ + 5 × (6 + 4) ÷ 2 = 8 + 5 × 10 ÷ 2 = 8 + 50 ÷ 2 = 8 + 25 = 33
4. (3 + 10 ÷ 2 - 6 + 18) ÷ 2² = (3 + 5 - 6 + 18) ÷ 4 = (20) ÷ 4 = 5
5. (4 + 5) ÷ 3 - 2 + (2² - 1) = 9 ÷ 3 - 2 + (4 - 1) = 3 - 2 + 3 = 4
6. 8 + 2 × (4 - 1) ÷ 3² - 2 = 8 + 2 × 3 ÷ 9 - 2 = 8 + 6 ÷ 9 - 2 = 8 + 2/3 - 2 = 6 + 2/3 = 6 2/3
7. 28 - (3² - 2) ÷ (4² - 13) = 28 - (9 - 2) ÷ (16 - 13) = 28 - 7 ÷ 3 = 28 - 2 1/3 = 25 2/3
8. 15 ÷ (30 - 3³) - 4² = 15 ÷ (30 - 27) - 16 = 15 ÷ 3 - 16 = 5 - 16 = -11
9. 13 + 7² - 8 ÷ (4 - 9 × 2 + 5) = 13 + 49 - 8 ÷ (4 - 18 + 5) = 13 + 49 - 8 ÷ (-9) = 13 + 49 + 8/9 = 62 + 8/9 = 62 8/9
Parent Tip: Review the logic above to help your child master the concept of prealgebra review worksheet.