Lesson objective: Practice writing and solving equations when one quantity is some number of times as much as another number.

This lesson helps to build procedural skill with using multiplication to compare amounts that include a fraction. All equations have the structure "comparison factor times some quantity = the resulting quantity" and have whole number comparison factors. This work develops students' understanding that because fractions are numbers, the meaning of multiplicative comparison does not change when fractions are involved.

Students engage in Mathematical Practice 1 (make sense of problems and persevere in solving them) as they evaluate multiplicative comparison situations.

**Key vocabulary:**

- comparison factor
- product

**Special materials needed:**

- none