Percent and Estimation Chapter 2 Lesson 2

Quick Check Answers

1.99

2. 174.8

3. 43.2

4. $73

5. 84

6. C

Estimate the Percent of a Number Method 1:

Convert the percent to a fraction and then solve.

Method 2:

Find 10% of the number and then multiply

70% = 7 X 10%

So 70% equals 7 times 10% of a number.

Percent to Fraction Method:

Method 2: Find 10% of the number

Practice Problems: 1.Estimate 61% of 440. 2. Melinda calculated that

40% of the coins in her collection were printed before 1964. If there are 715 coins in her collection, about how many of them were printed before 1964?

Answers: 1. 2.

Practice Problem: 1. Estimate 173% of 60

Answer:

Practice Problems: 1.  About ⅓% of Smithville’s 1,500

adult citizens are attending the upcoming pop concert. What is the approximate number of adults attending the concert?

2. Last weekend 96,081 people attended a college football game. About 0.25% of them were reporters from newspapers, televisions, and radio stations. About how many reporters were at the game?

Answers: 2.