9
QuizMultiple Choice

Multiplying Decimals

Question 9 • SS-Math 7

Sydney applied the steps below to find the product of (3.1)(–1.6).Step 1: (3.1)(–1.6) = (–1.6)(3.1) Step 2: = _______________Step 3: = (–4.8) + (–0.16)Step 4: = –4.96Which expression correctly fills in the blank in Step 2?

Answer
A
(1.6)(3) – (1.6)(0.1)
B
(–1)(3) + (–0.6)(0.1)
C
(1)(3) – (0.6)(0.1)
D
(–1.6)(3) + (–1.6)(0.1)

Explanation

Rewrite 3.1 as 3 + 0.1. Then distribute −1.6 across both parts: (−1.6)(3) + (−1.6)(0.1). These products are −4.8 and −0.16, matching Step 3, so the correct expression is choice D.

AI-written and checked against the verified answer.

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