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MF.PR.4 Challenge MF-018-A13-V03

Use ratio tables and double number lines to solve missing-value and scaling problems.

Choose a smart table or number-line strategy

Problem

A ribbon table has (\(9~\text{feet}\), \(\$12\)), (\(18~\text{feet}\), \(\$24\)), and (\(27~\text{feet}\), ?). Which method works: A, scale the \(9\text{-}\text{foot}\) row by \(3\); B, add \(\$9\) to \(\$24\); C, keep \(\$24\); or D, add \(3\) to \(\$12\)? Choose it, then find the cost for \(27~\text{feet}\).

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Four variants of this problem type
Curriculum context
Standard
MF.PR.4
Category
Proportional Reasoning
Domain
Representations
Objective
Use ratio tables and double number lines to solve missing-value and scaling problems.
Problem type
Choose a smart table or number-line strategy