Download presentation

1
**Decimals and Fractions**

Applied Mathematics Jefferson College ATS

2
Definitions Decimal - Any number shown with a decimal point; a number based upon tenths or hundredths. ( 0.2, 0.375, 86.4 ) Fraction - One or more of the equal parts of a whole; a number usually expressed in the form a/b. ( 1/3, 2 5/8, 7/4 )

3
**Converting Fractions to Decimals**

To convert a fraction to a decimal, divide the numerator by the denominator. Do this until you get a decimal that terminates or repeats. If it repeats, place a bar (--- ) over the first number that repeats. Example 1: Convert 3/4 to a decimal 3/4 = 3÷4= 0.75 ( terminating decimal) Example 2: Convert 2/3 to a decimal 2/3= 2÷3= ( repeating decimal )

4
**Express fractions as percents by long division**

You try: Express fractions as percents by long division 87.5 % 0.875 = 125 % 1.25 = 37.5 % .375 =

5
1) 7/40 2) 7/50 3) 19/10 4)1/4 5)11/10 6)37/25 7)7/20 8)32/25 9)26/20

6
**Converting Decimals to Fractions**

In order to convert a decimal to a fraction, place the number that follows the decimal point over the place that it is in ( tenths, hundredths, thousandths, etc.). Then simplify as necessary. Example 1: Convert 0.7 to a fraction 0.7= 7/10 ( 7 is in the tenths place ) Example 2: Convert 0.25 to a fraction 0.25= 25/100= 1/4 ( 25 is in the hundredths place. 1/4 is the simplified form of 25/100) Example 3: Convert to a fraction 1.625= 1 625/1000= 1 5/8 ( 625 is in the thousandths place. 5/8 is the simplified form of 625/1000)

7
**Convert decimal to base 10 fraction; simplify**

You try Convert decimal to base 10 fraction; simplify 8 4 0.8 = = 10 5 4 2 1 0.04 = = = 100 25 50 36 18 9 3.36 3 3 3 = = = 100 50 25

8
1)0.866 = 2)0.428 = 3)0.3 = 4)0.41 = 5)0.992 =

9
6) = 7) = 8)0.62 = 9) 1.22 = 10)0.19 =

Similar presentations

© 2024 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google