Download presentation

Presentation is loading. Please wait.

Published byHailey Moser Modified over 4 years ago

1
Multiplying Decimals & Properties of Multiplication Christine Berg Edited By V T Hamilton

2
Step 1: Multiply as if the factors were whole numbers

3
Step 1: 8.5 X2.5 4 2 5 1 7 0 0 2 1 2 5 next…..

4
Step 2: Count the total decimals places in the factors

5
Step 1: 8.5 X2.5 4 2 5 1 7 0 0 2 1 2 5 next…..

6
Step 3: Give the product the total decimal places of the factors

7
Step 1: 8.5 X2.5 4 2 5 1 7 0 0 2 1.2 5

8
Try These: 1. 4.8 2. 3.55 x 0.5 x.05

9
Answers: 1. 4.8 2. 3.55 x 0.5 x.05 = 2.40 = 0.1775

10
Properties of Multiplication

11
Identity Property The product of 1 and a number (a) is the number (a) 1(a) = a

12
Examples 1 (b) = b 1 x 42 = 42

13
Zero Property The product of 0 and a number (a) is 0 0 (a) = 0

14
Examples 0 (b) = 0 0 x 67 = 0

15
Commutative Property Changing the order of the factors does not change the answer

16
Examples a ( b ) = b ( a ) 5 x 2 = 2 x 5

17
Associative Property Changing the grouping of factors does not change the answer

18
Examples ( a b ) c = a ( b c ) ( 3 x 2 ) x 4 = 3 x ( 2 x 4 )

19
Try These: Identify the property ( x y ) z = x ( y z ) 0 x 4 = 0

20
Answers: ( x y ) z = x ( y z ) Associative Property of x 0 x 4 = 0 Zero Property

Similar presentations

OK

If this is a number line, where would we put counting numbers?

If this is a number line, where would we put counting numbers?

© 2018 SlidePlayer.com Inc.

All rights reserved.

By using this website, you agree with our use of **cookies** to functioning of the site. More info in our Privacy Policy and Google Privacy & Terms.

Ads by Google

Ppt on area of plane figures worksheets Ppt on air conditioning and refrigeration Ppt on measures to control environmental pollution Ppt on railway track geometry Ppt on preservation of ozone layer Convert pdf ppt to ppt online templates Ppt on rain water conservation Ppt on l&t finance holdings stock price Ppt on bluetooth communication ios Ppt on distributed file system