Back to Solve multi-step real-life and mathematical problems with positive and negative rational numbers — Problem 1 · Task Set 9

Solving Multi-Step Problems with Rational Numbers

23 problems·~30 min·Common Core Math - Grade 7·standard·7-ee-b-3

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A store bought 24 items at $1.75 each. Six of the items were damaged and returned for a refund of $1.50 each. Which sequence of operations gives the net cost to the store?

Add $24 + 6 = 30$ total items, then multiply by $1.75.

Multiply $24 \times 1.75$ for the purchase cost, multiply $6 \times 1.50$ for the refund, then subtract the refund from the purchase cost.

Multiply $24 \times 1.50$ , then subtract $6 \times 1.75$ .

Subtract $24 - 6 = 18$ net items, then multiply $18 \times 1.75$ .