1. 5 + 7 * 8 -10 / (4 + 2) = 
2. 200 * 20 / 4 + 6 – 3 = 
3. (12 / 2 + 14 + 36 + 18 – 26) / 5 * (40 / 10) = 

Here are the results for the given expressions:

1. \( 5 + 7 \times 8 - \frac{10}{4 + 2} = 59.33 \)
2. \( 200 \times 20 / 4 + 6 - 3 = 1003 \)
3. \( \left(\frac{12}{2} + 14 + 36 + 18 - 26\right) / 5 \times \frac{40}{10} = 38.4 \)

Would you like further details on how these were calculated?

Here are five related questions to expand your understanding:
1. What is the order of operations in mathematical expressions?
2. How do parentheses affect calculations?
3. What is the difference between division by a whole number and division by a fraction?
4. Can you explain how multiplication distributes over addition in parentheses?
5. What happens if we change one operation to subtraction in one of the expressions?

**Tip:** Always follow the PEMDAS rule (Parentheses, Exponents, Multiplication/Division, Addition/Subtraction) when evaluating expressions.

1. 5 + 7 * 8 - 10 / (4 + 2) = 
2. 200 * 20 / 4 + 6 – 3 = 
3. (12 / 2 + 14 + 36 + 18 – 26) / 5 * (40 / 10) =

Learn how to solve mathematical expressions like 5 + 7 * 8 - 10 / (4 + 2) using the PEMDAS rule (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction). Explore step-by-step solutions for similar problems, such as 200 * 20 / 4 + 6 - 3 and (12 / 2 + 14 + 36 + 18 - 26) / 5 * (40 / 10). Perfect for students in Grades 5-7.

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