Download presentation
Presentation is loading. Please wait.
Published byGrace Blankenship Modified over 8 years ago
1
Opening Activity Each table will need the following: - Scissors - Colored paper (1 per person) - Glue Stick Have homework out and ready to be checked.
2
Homework Check Page 137 65. 3 66. 37 67. 2 68. 81 69. 25
3
Students will be able to identify and apply the Mathematical Properties of Operations.
4
Commutative Property Commutative Property – The property that states that changing the order of addends does not change the sum and that changing the order of factors does not change the product. Examples: Think-Pair-Share Does….? 3+2 = 2+3 5 x 10 = 10 x 5 4 – 2 = 2 – 4 20 ÷ 4 = 4 ÷ 20
5
Trick To Remember Commutative Commute - to travel back and forth. http://www.youtube.com/watch?v=TkCz2KvvWrI http://www.youtube.com/watch?v=TkCz2KvvWrI How do you get from place to place? How are commuting and the Commutative Property related?
6
On your colored paper Commutative Property – The property that states that changing the order of addends does not change the sum and that changing the order of factors does not change the product. Order doesn’t matter for addition or multiplication. Examples:
7
Associative Property Associative Property – The property that states that changing the way addends are grouped does not change the sum and that changing the way factors are grouped does not change the product. Examples: Does…? 1. (3 + 2) + 1 = 3 + (2 + 1) 2. (5 x 2) x 3 = 5 x (2 x 3) 3. (6 – 2) – 3 = 6 – (2 – 3) 4. (12 ÷ 2) ÷ 6 = 12 ÷ (2 ÷ 6)
8
Trick To Remember Associative Associate – to hang out with your friends. http://www.youtube.com/watch?v=tvCycN6Hm_E Do you hang out with the same group of friends all the time, or does your group of friends change? How is associating with friends and the Associative Property the same?
9
On your colored paper Associative Property – The property that states that changing the way addends are grouped does not change the sum and that changing the way factors are grouped does not change the product. Grouping doesn’t matter for addition or multiplication. Examples:
10
Brain Break
11
In your head, do the following… Start with 1,000 Add 40 Add 1,000 Add 30 Add 1,000 Add 20 Add 1,000 Add 10 What did you get for your answer?
12
Opening Activity Gather the materials needed for today. Colored paper (1 sheet per student) Glue stick (1 per table) Scissors (1 pair per table) Fold, cut and glue your paper just like we did last week. Remember to make sure you have two flaps that you can lift.
13
On one flap Identity Property
14
Identity Property of Addition – You can add 0 to any number and the number remains the same. Identity Property of Multiplication – You can multiply any number by 1 and the number remains the same.
15
Trick To Remember Identity Identical – to look exactly the same. https://www.youtube.com/watch?v=IAOKP6VOHZE
16
Examples Identity Property of Addition 4 + 0 = 41,234 + 0 = 1,23432 + 0 = 32 Identity Property of Multiplication 4 x 1 = 41,234 x 1 = 1,23432 x 1 = 32
17
Distributive Property Definition – The property that states that the result of multiplying a number by the sum of two numbers is the same as the result of multiplying each addend by the number. Examples: 4 x (3 + 5) Try One: 2 x (3 + 5)
18
Trick To Remember Distributive Distribute – to deliver or hand out http://www.youtube.com/watch?v=A22bDx2qxu8 Does the Delivery man skip houses if he has a package to deliver at that house?
19
Homework - Identify the Property Directions: Copy each problem. Write what property is being shown under each problem. Prove your answer by solving each problem. 1. 5 x (2 + 3) = (5 x 2) = (5 x 3) 2. 3 + 0 = 3 3. 4 x 5 x 2 = 2 x 4 x 5 4. (4 + 2 )+ 3 = 4 +(2 + 3) 5. 1 x 55 = 55
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.