## Thinking Mathematically (6th Edition)

Published by Pearson

# Chapter 1 - Problem Solving and Critical Thinking - Chapter Summary, Review, and Test - Review Exercises: 24

#### Answer

Approximately 5,100,000

#### Work Step by Step

The number of enrolled students is $17,487,475$. The percentage of students who used grants and scholarships is $29\%$ To get an estimate without using a calculator, we'll round the percentage to $30\%$ and the number of students to $17,000,000$. Our estimate is: $17,000,000*\frac{30}{100}=1,700,000*3=5,100,000$ Now, let's check our estimate with a calculator: $17,487,475*\frac{29}{100}=5,071,368$ Our estimate was reasonable.

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