Download presentation

Presentation is loading. Please wait.

Published byJason Short Modified over 7 years ago

1
(9 + 8) + 7 = 9 + (8 + 7) The Associative Property of Addition 12 + 0 = 12 The Identity Property of Addition 9 + 7 = 7 + 9 The Commutative Property of Addition

2
Textbook page 10- 11, problem 8-40 even show all your work Skip Problem #34

4
1. Commutative 2. Associative 3. Identity 4. Zero Property

5
Commuter A Commuter B Commuter A Commuter B A x B = B x A. Remember… commute means to change.

6
A x B = B x A

7
Commutative Property of Multiplication Changing the order of the factors does not change the product A x B = B x A 1 x 2 x 3 = 3 x 1 x 2 4 x 5 x 6 = 5 x 6 x 4

8
1. Commutative 2. Associative 3. Identity 4. Zero Property

9
(A x B) x C = A x (B x C) AC B AC B THEN The parentheses identify which two associates talked first.

10
Associative Property of Multiplication Changing the grouping of the factors does not change the product. (1 x 2) x 3 = 1 x ( 2 x 3) (4 x 5) x 6 = 4 x ( 5 x 6 ) (A x B) x C = A x ( B x C)

11
1. Commutative 2. Associative 3. Identity 4. Zero Property

12
A x 1 = A x 1 =

13
Identity Property of Multiplication The product of one and anything is anything 1 x 3 = 3 18 x 1 = 18 1 x C = C

14
1. Commutative 2. Associative 3. Identity 4. Zero Property

15
A x 0 = 0 x 0 = 0

16
Zero Property of Multiplication The product of zero and anything is zero 3 x 0 = 0 18 x 0 =0 0 x C = 0

17
Look at the problem. Identify which property it represents.

18
(9 x 8) x 7 = 9 x (8 x 7) The Associative Property

19
12 x 0 = 0 Zero Property

20
3 x1 = 3 The Identity Property

21
9 x 7 = 7 x 9 The Commutative Property

22
4 x1 = 4 Identity Property Numbers change places.

23
(4 x 3) x 2 = 4 x (3 x 2) The Associative Property It has parentheses!

24
a x b = b x a The Commutative Property Moving numbers!

25
a x 0 = 0 Zero Property

26
A (a x b) x c = a x (b x c) The Associative Property Parentheses! CB

27
1. Write the Problem 4. 32 x 0.012 *** Place values do NOT need to line up, but digits do!!! Multiplying Decimals - Steps

28
2. Pretend decimals are not there! 4. 32 x 0.012 Multiplying Decimals - Steps

29
3. Multiply 4. 32 x 0.012 864 + 4320 00000 05184 Multiplying Decimals - Steps

30
4.Count total number of places behind ALL Decimals 4. 32 x 0.012 864 + 4320 00000 05184 2 places 3 places 5 total places!! Multiplying Decimals - Steps

31
5.Place decimal that many places left.. 05184. 05184 4. 32 x 0.012 864 + 4320 00000 05184 Multiplying Decimals - Steps

32
3.41

33
Textbook page 16, problem 12-30 even show all your work 12- 18 do not estimate, give exact answer 30 show work (not extra credit)

Similar presentations

© 2023 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