Maria bought 3 boxes of crayons for 4 dollars each and 5 notebooks for 2 dollars each. Which pair of expressions represents the total cost?

$3 \cdot 4 + 5 \cdot 2$ and $4+4+4 + 2+2+2+2+2$

$(3+5) \cdot (4+2)$ and $3 \cdot 4 + 5 \cdot 2$

$3 \cdot 4 \cdot 5 \cdot 2$ and $4+4+4 + 2+2+2+2+2$

$3 \cdot (4+5) + 2$ and $3 \cdot 4 + 5 \cdot 2$

Order of Operations Practice — Grade 6 math

1. Following the order of operations, what is the value of the numeric expression $15 + 4 \cdot 5$? The value is ___.
2. What is the value of the numeric expression $(8 + 4) \cdot 3$?
- A. 36
- B. 20
- C. 24
- D. 15
3. Which of the following numeric expressions is equivalent to $5 \cdot (10 + 4)$?
- A. $5 \cdot 10 + 4$
- B. $5 + 10 \cdot 4$
- C. $5 \cdot 10 + 5 \cdot 4$
- D. $(5 + 10) \cdot 4$
4. Evaluate the numeric expression $4 \cdot (3 + 5) - 2$. The value is ___.
5. Maria bought 3 boxes of crayons for 4 dollars each and 5 notebooks for 2 dollars each. Which pair of expressions represents the total cost?
- A. $3 \cdot 4 + 5 \cdot 2$ and $4+4+4 + 2+2+2+2+2$
- B. $(3+5) \cdot (4+2)$ and $3 \cdot 4 + 5 \cdot 2$
- C. $3 \cdot 4 \cdot 5 \cdot 2$ and $4+4+4 + 2+2+2+2+2$
- D. $3 \cdot (4+5) + 2$ and $3 \cdot 4 + 5 \cdot 2$
6. Evaluate the expression: $18 + 7 - 10$. The result is ___.
7. Which expression shows the correct first step to evaluate $30 - 12 - 5$ according to the left-to-right rule?
- A. (30 - 12) - 5
- B. 30 - (12 - 5)
- C. 30 - (12 + 5)
- D. (30 - 5) - 12
8. What is the value of the expression $24 \div 6 \times 2$? The value is ___.
9. Evaluate the expression: $36 \div 6 \times 2$.
- A. 12
- B. 3
- C. 72
- D. 18
10. Calculate the value of the expression $25 - 10 + 4$. The value is ___.