Question

In a class of 25 students, 40% of the students have a pet. How many of the students have a pet?

Horatio used centimeter cubes with a percent mat to model this scenario, as shown in the image below.

A rectangle is divided into five equal vertical sections. Each section contains five cubes stacked vertically, with the sections labeled from 0% to 100% at the bottom.

students have a pet

Answer 1

40% of 25 = 0.40 × 25 = 10.

(Or as fractions: 40% = 2/5, and (2/5)×25 = 10. In Horatio’s model each of the five sections is 20% = 5 students, so 40% = two sections = 10 students.)