Question

which two expressions are equivalent to \\((9 \times 3) \times 3\\)?

choose 2 answers:

a \\(9 \times (3 \times 3)\\)

b \\(27 + 3\\)

c \\(9 \times 9\\)

Explanation:

Evaluate the given expression

Using the Equivalent Expressions knowledge point

$$ (9 \times 3) \times 3 = 27 \times 3 = 81 $$

Analyze option A

Using the Associative Property knowledge point

$$ 9 \times (3 \times 3) = (9 \times 3) \times 3 = 81 $$

Analyze option B

Using the Equivalent Expressions knowledge point

$$ 27 + 3 = 30 e 81 $$

Analyze option C

Using the Equivalent Expressions knowledge point

$$ 9 \times 9 = 81 $$

Answer:

• (A) \(9 \times (3 \times 3)\) (Correct answer)
• (B) \(27 + 3\)
• (C) \(9 \times 9\) (Correct answer)