Introduce students to using double (or stacked) number lines to answer direct proportion questions with ease with this worksheet.

Learners will begin by considering what multiplicative relationships they can see in two stacked number lines in section A. Here, pupils are required to fill in missing information, including missing numbers on the number lines.

Next, in section B, students will match 3 scenarios to the correct number line and add labels.

Then in section C, learners will complete three stacked number lines for three different scenarios and use their number lines to answer direct proportion questions such as a recipe problem and scales used on maps.

Exploring Direct Proportion Using Stacked Number Lines (B) is a great follow-on that will see pupils constructing their own number lines to solve problems.