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MF.PR.4 Warmup MF-018-A02-V02

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

Find a missing value on a double number line

Problem

A double number line shows miles on the top line and kilometers on the bottom line. \(\text{One}~\text{aligned}~\text{pair}\) is labeled \(3~\text{miles}\) and \(4.8~\text{kilometers}\). Another tick on the bottom line is labeled \(8.0~\text{kilometers}\). What number of miles belongs at the tick aligned with \(8.0~\text{kilometers}\)?

Double number line with miles on the top line and kilometers on the bottom line. A labeled aligned pair shows 3 miles with 4.8 kilometers. Another aligned tick on the bottom line is labeled 8.0 kilometers, and the top line at that tick is blank. Open full size
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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
Find a missing value on a double number line