Question

each metal ball weighs 0.5 grams. how much do 7 metal balls weigh in all?
____ grams
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Explanation:

Step1: Identify given values

Weight of 1 ball = $0.5$ g, Number of balls = $7$

Step2: Calculate total weight

Multiply weight per ball by count: $0.5 \times 7$

Answer:

3.5 grams