Download presentation

Presentation is loading. Please wait.

1
PERCENT(%) Lesson 11

2
**60 100 212 100 = 0.6 = 2.12 WHAT DOES PERCENT MEAN?**

Percent means “out of 100” EXAMPLE: 60 100 212 100 = 0.6 = 2.12

3
**HOW TO CHANGE PERCENT TO A FRACTION**

Make an equivalent fraction out of 100 Numerator is the answer with a % sign. 6 20 30 100 =

4
TRY THESE x20 2 5 40 100 = x20 3 4 x25 75 100 = x25 6 15 40 100 2 5 ÷3 x20 = = ÷3 x20

5
**HOW TO CHANGE A DECIMAL TO PERCENT**

Place Value 0.415 thousandths tenths hundredths EXAMPLE: x10 9 10 90 100 = 90 % 0.9 = = x10

6
**HOW TO CHANGE DECIMAL TO PERCENT**

Why do we say move the decimal two places to the right? Multiply by 100 because percent means “out of 100” 0.90 = 90 %

7
TRY THESE 0.7 0.56 0.349 1.26

8
**HOW TO CHANGE PERCENT TO A FRACTION IN LOWEST TERMS**

EXAMPLE ÷2 9 25 ÷2 36 100 18 50 % 36 = = = ÷2 ÷2 USE DIVISIBILITY RULES TO MAKE THIS FASTER

9
**HOW TO CHANGE PERCENT TO A FRACTION IN LOWEST TERMS**

EXAMPLE 1 4 ÷25 5 4 125 100 = 1 125 % = = ÷25 Why do we say move the decimal two places to the left? We are dividing by 100 because percent is “out of 100”

10
**HOW TO FIND THE PERCENT OF A NUMBER**

EXAMPLE 25 % 40 OF 1) Change Percent to a fraction and multiply 1 4 40 4 40 10 25 % = x = =

11
**HOW TO FIND THE PERCENT OF A NUMBER**

2) If both numbers end in 0, multiply the first digits together 20 % 60 OF 2 6 = 12 x

12
**50 % 10 50 % = 10 10 50 = ? % 10 = ? 10 = 20 DETERMINE THE NUMBER x x**

OF A NUMBER IS _____ x 50 % = 10 10 ÷ 50 = ? % 1 2 10 ÷ = ? 2 1 10 x = 20

13
EXAMPLE 60 % 42 OF A NUMBER IS

14
**WHAT “PERCENT OF” QUESTIONS**

80 IS 16

15
**WHAT “PERCENT OF” QUESTIONS**

80 IS 16 80 = 16 x _____

16
**WHAT “PERCENT OF” QUESTIONS**

80 IS 16 x _____ = 16 80 16 80 = ?

17
**WHAT “PERCENT OF” QUESTIONS**

80 IS 16 80 = 16 x _____ REDUCE TO LOWEST TERMS 16 80 ? =

18
**WHAT “PERCENT OF” QUESTIONS**

80 IS 16 80 = 16 x _____ REDUCE TO LOWEST TERMS 16 80 ? = 2 10 = 0.2 20 % =

19
**Try this Microwave costs $119.00 Sale: 15% regular price**

Find the change in Price Find the sale Price

20
**Microwave costs $119.00 Sale: 15% regular price**

Find the change in price $119 x 0.15 = $17.48

21
**Microwave costs $119.00 Sale: 15% regular price**

Find the sale price $119 x 0.15 = $17.85 $119 - $17.85 = $101.15 or $119 x 0.85 = $101.15

22
**TRY THIS A Frisbee costs $5.98 after a 20% discount.**

Find the original price HINT: This is the same as “% of a number” question

23
**A Frisbee costs $5.98 after a 20% discount.**

Find the original price 80% x __________ = $5.98 $5.98 0.8 = $7.48

24
**TRY THIS DVD is regularly $130 is on sale for $89.**

What was the discount ( in %)

25
**DVD is regularly $130 is on sale for $89.**

What was the discount ( in %) Original - New Original $130 - $89 $130 $41 $130 = = 31.5 %

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