Back to Quantities — Problem 1 · Task Set 29

HSN.Q Tutor Intake — Units, Quantities, and Accuracy

This short check helps your tutor understand where to start. Answer each question without help. If you're not sure, give your best try — the goal is to find what to work on together, not to grade you.

Grade 9·13 problems·~15 min·Common Core Math - HS Number and Quantity·domain·q

Work through problems with immediate feedback

Concepts

A factory produces widgets at a rate of 150 widgets per hour.
Each widget uses 0.5 kg of raw material. The factory runs for
8 hours. A student wants to find the total kilograms of raw
material used. Before computing, which unit analysis shows that
multiplication of all three quantities gives kilograms?

(widgets/hour) × (kg/widget) × (hours) = kg

(widgets/hour) ÷ (kg/widget) × (hours) = kg

(widgets/hour) + (kg/widget) + (hours) = kg

The units cannot determine the operation — only the numbers matter.