converting rational numbers.notebook

3
Converting Rational Numbers.notebook 1 October 17, 2018 Sep 218:22 AM WarmUp 9/21/16 Oct 73:32 PM Warm Up Sep 218:23 AM Converting Decimals Fraction and Percents Sep 219:05 AM Rational Numbers A rational number is any number that can be written as a fraction , where a and b are integers, and b cannot equal zero. a b *Remember: We cannot have zero in the denominator because you can't divide a number by zero! Sep 219:08 AM Simplify: 1. 5 15 1 3 = 2. 21 25 Simplified = 3. 24 32 3 4 = Sep 219:12 AM

Upload: others

Post on 01-Jan-2022

4 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Converting Rational Numbers.notebook

Converting Rational Numbers.notebook

1

October 17, 2018

Sep 21­8:22 AM

Warm­Up 9/21/16

Oct 7­3:32 PM

Warm Up

Sep 21­8:23 AM

ConvertingDecimalsFractionand 

Percents

Sep 21­9:05 AM

Rational Numbers

A rational number is any number that can be written as a fraction     , where a and b are integers, and b cannot equal zero.

ab

*Remember: We cannot have zero in the denominator because you can't divide a number by zero!

Sep 21­9:08 AM

Simplify:

1. 515

13

=

2.  2125 Simplified=

3.  ­2432

­34=

Sep 21­9:12 AM

Page 2: Converting Rational Numbers.notebook

Converting Rational Numbers.notebook

2

October 17, 2018

Sep 21­9:18 AM

Writing Decimals as Fractions

 0.5The 5 is in the tenths place so we put 5 over 10

510

12

*Remember: ALWAYS SIMPLIFY!!

Sep 21­9:24 AM

What about these: (Show me your steps!)

­2.37 ­2 37100

0.652 6521000

163250

0.48 48100

1225

Sep 21­9:38 AM

Writing Fractions as Decimals

*Divide the numerator by the denominator

54 54

* Remember: The numerator goes inside the box!

1)

2) 16 16

Sep 21­9:42 AM

Try these!

1)  815

2) 145

3) 920

Sep 21­9:48 AM

Converting to Percents

*Think of the % symbol as meaning out of 100

How would I turn      into a percent?25

1) Divide to get a decimal.

2) Convert that decimal to a percent by multiplying by 100 (or moving the decimal place 2 times to the right)

25

0.40 40%

Sep 21­9:55 AM

How would I go from a percent to a decimal? What did I do to convert to a percent? Would I do the same thing?

75% 0.75.

* To convert a percent to decimal, you will now divide by 100 (or move the decimal place 2 places to the left).

Then if you want to convert your decimal to a fraction, follow the same steps we did before.

Page 3: Converting Rational Numbers.notebook

Converting Rational Numbers.notebook

3

October 17, 2018

Sep 21­9:59 AM

Try converting these!

1) 32% as a fraction

2)     as a percent78

3) 82.6% as a decimal 

825

87.5%

0.826

4) 1.3 as a percent 130%

Sep 21­10:02 AM

Practice 

Google Classroom

Converting Worksheet