Question

1. (13 \times 4 - 72 div 8)\\10. (16 div 2 + 8 \times 3)\\11. (30 div (21 - 6) \times 4)\\12. (6 \times 7 div (6 + 8))\\13. (88 - 16 \times 5 + 2 - 3)\\14. ((2 + 6) div 2 + 4 \times 3)\\15. (4^2 - 24 div 8)\\16. (100 div 5^2 \times 4)

Explanation:

Let's solve each problem step by step:

Problem 9: \( 13 \times 4 - 72 \div 8 \)

Step 1: Calculate multiplication and division

First, calculate \( 13 \times 4 = 52 \) and \( 72 \div 8 = 9 \).

Step 2: Calculate subtraction

Then, subtract the results: \( 52 - 9 = 43 \).

Step 1: Calculate division and multiplication

First, calculate \( 16 \div 2 = 8 \) and \( 8 \times 3 = 24 \).

Step 2: Calculate addition

Then, add the results: \( 8 + 24 = 32 \).

Step 1: Calculate the expression inside the parentheses

First, calculate \( 21 - 6 = 15 \).

Step 2: Calculate division and multiplication

Then, calculate \( 30 \div 15 = 2 \), and then \( 2 \times 4 = 8 \).

Answer:

\( 43 \)

Problem 10: \( 16 \div 2 + 8 \times 3 \)