It looks like you’ve uploaded an "Order of Operations Puzzle" worksheet. The problems focus on evaluating expressions using the correct order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right)).

Let’s walk through the worksheet’s problems:

1. 15 - 3 × 4 = 3

   • The student wrote: $15 - 12 = 3$, which is correct. The order of operations was followed (multiplying before subtracting).

2. (18 ÷ 4) × 2 = 11

   • Solution: $(18 ÷ 4) × 2 = 4.5 × 2 = 9$, but the student circled this as correct even though the final answer isn't 11.

3. 20 - 8 + 3 = 9

   • This one looks fine: $20 - 8 = 12$ and then $12 + 3 = 15$, so the answer is 15, not 9. It was evaluated incorrectly.

4. 56 ÷ 8 - 1 = 6

   • $56 ÷ 8 = 7$, and $7 - 1 = 6$, which is correct.

5. 20 + 10 × 2 = 4

   • The student incorrectly evaluated $20 + 10 × 2 = 4$, which is wrong. The correct solution should follow multiplication first:
     • $10 × 2 = 20$, then $20 + 20 = 40$, not 4.

6. (7 × 5) ÷ 2 = 49

   • Evaluating inside parentheses: $7 × 5 = 35$, then $35 ÷ 2 = 17.5$, not 49. The answer provided is incorrect.

7. 5 + 8 × 2 - 4 = 22

   • Correctly solved:
     • $8 × 2 = 16$, then $5 + 16 = 21$, and finally $21 - 4 = 17$, not 22.

8. 36 ÷ 6 × 2 + 9 = 12

   • The correct order should be division and multiplication first:
     • $36 ÷ 6 = 6$, then $6 × 2 = 12$, and $12 + 9 = 21$, not 12. The answer is incorrect.

9. 4 × 10 ÷ 3 + 2 = 8

   • The student's scratch work shows $40 ÷ 3 = 13.33$, so the final answer should be:
     • $13.33 + 2 = 15.33$, which does not equal 8. The answer is incorrect.

10. 43 - 4 × 4 + 8 = 35

    • Correctly evaluated:
      • $4 × 4 = 16$, then $43 - 16 = 27$, and $27 + 8 = 35$, which is correct.

11. 16 + 21 - 3 × 6 = 19

    • Multiplication first: $3 × 6 = 18$, then $16 + 21 = 37$, and $37 - 18 = 19$, which is correct.

12. 11 + 10 - 4 × 9 = 65

    • The correct answer is:
      • $4 × 9 = 36$, then $11 + 10 = 21$, and $21 - 36 = -15$, so it does not equal 65. This is incorrect.

Would you like to go into more detail on any specific question?

Here are 5 related questions to practice:

1. How do you handle parentheses in expressions like $(2 + 3) \times 4$?
2. What’s the result of $24 \div 4 \times 3 + 2$?
3. If an equation has both addition and subtraction, which one should be done first?
4. How do you solve $36 + 18 \div 6 - 5$?
5. Can you explain why $7 + 3 \times 2 - 1 = 12$?

Tip: Always solve any operations inside parentheses first, then move on to exponents, and continue following the PEMDAS rule step by step!