1 / 13

Properties

Properties. By Veda. 1. The Commutative Property. It means that the numbers can be put in any order & you still get the same answer. Example: 2+4=6 4+2=6 Example 2: 8•5=40 5•8=40 Only addition and multiplication are commutative Why subtraction and division aren’t commutative:

nhu
Télécharger la présentation

Properties

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Properties By Veda

  2. 1. The Commutative Property • It means that the numbers can be put in any order & you still get the same answer. • Example: 2+4=6 4+2=6 • Example 2: 8•5=40 5•8=40 • Onlyaddition and multiplication are commutative • Why subtraction and division aren’t commutative: • 8-6=2 6-8=-2

  3. Commutative Problems 8+5= + _ 6+7= + _ Julie has 5 cousins and 2 brothers. How many cousins and siblings does she have all together in a commutative equation? _________________________________________

  4. Associative Property • No matter how the numbers are grouped the answer stays the same. • Only addition and multiplication are associative. • Ex: (5+6) + 3 =14 5 + (6+3) = 14 (is associative) • Ex. 2: (8-3)-2=3 8-(3-2) = 7 (not associative)

  5. Associative Problems • Is this associative? (9+5) + 4 (9-5) – 4 Dennis has 5 green marbles and 4 blue marbles. Tom has 6 yellow marbles. Using the associative property, figure out how many marbles they have all together. __________________

  6. Distributive property • The distributive property says that multiplying a number by a quantity is the same as multiplying the number by each number in the quantity. • This works with multiplication over any operation. Ex. 2(4•5) = (2•4) (2•5)

  7. Distributive property problems What are the following equations in distributive form? 8(3•7) 6(2•4) Bob is trying to solve this problem: 9(10•11) Solve it using the distributive property. _____________________________

  8. Zero property • When you multiply a number by 0, its product is 0. This works with multiplication. • Ex. 5•0=0 • Ex. 2: 1•0=0 • Ex.3: 999,999,999•0=0

  9. Zero Property problems 9•0=__ 55•0=_ Wendy bought 5 bags of apples. If the bags have 0 apples in them, how many apples does she have? ____________________

  10. Identity property(multiplication) • When you multiply a number by 1, it doesn’t change. • This works for multiplication. • Ex: 8•1=8

  11. Identity Property of multiplication problems • 8(1)=___ • 24(1)=__ • There are 56 total people at a picnic. If everyone brings one different food, how many different kinds of food will there be at the picnic? _________

  12. Identity property of addition • When you add 0 to any number, it stays the same. • This works for addition. Ex. 3+0=3

  13. Identity property of addition problems 9+0=__ 888+0=___ Jenna has 1 bag of chips. She gets 0 more at the store. How many bags of chips does she have now? ____________________

More Related