The table shows the reasons that students in 6th – 12th grade read. 1. What percent of students read for fun? Reasons for reading Percent of students For fun 42% To get facts/information 35% To help make decisions 9% To find out what other people think 7% 2. Write the fraction as a decimal. 42% 21 50

Chapter 5 Lessons 6 and 7 Objectives: Write percents as decimals Write decimals as percents Find the Least Common Multiple of two or more numbers

Today we are going to… 1. Write percents as decimals

ALL PERCENTS ARE OUT OF…. Recall!! ALL PERCENTS ARE OUT OF…. 100

It’s all about moving the decimal. How many places do you think we are going to move the decimal and what makes you think that? TWO because there are two zeros in 100

To change percents to decimals. Move the decimal point two places to the LEFT!

Write each percent as decimal. Lets try some! Write each percent as decimal. 23% .23 76% .76 8.5% .085

Write each percent as a decimal You try some! Write each percent as a decimal 85.3% .853 25% .25 6.7% .067

Now lets try changing decimals to percents. What is your guess on how to do it?

2. To change decimals to percents. Move the decimal point TWO places to the RIGHT!

Take a look at a few! .65 65% 0.347 34.7% 5.1 510% .7 70%

Class work Do page 222 numbers 13-27 odd

Multiple The product of a number and any whole number. Ex. The first 6 multiples of 3 are 3, 6, 9, 12, 15, and 18 List the first 6 multiples of 4 4, 8, 12, 16, 20, and 24

3. Find the Least Common Multiple (LCM) The least multiple that two or more numbers have in common. Ex. 9: 9, 18,27, 36, 45, 54 12: 12, 24, 36,

The short cut! Find the multiples of the largest number and determine if the multiples go into the smallest numbers. 3 12: 12 LCM = 12

Here are a few more examples! Find the LCM of the following numbers. 6 and 10 6 10: 10, 20, 30, LCM is 30

Find the LCM 24 and 36 24: 36: 36, 72, 4, 10 and 15 4: 10: 15: 15, 30, 45, 60,

Find the LCM of each set of numbers. You try some! Find the LCM of each set of numbers. 4 and 10 20 6 and 7 42 3, 5 and 12 60

You try some on your own! Page 226 numbers 9-19 odd

Homework Page 576 Lesson 5-6 numbers 2-40 even