Presentation is loading. Please wait.

Presentation is loading. Please wait.

Number Properties Rules of the game 2-7-1 Properties Properties are the rules of the game. If the rules are changed a different kind of math is played.

Similar presentations


Presentation on theme: "Number Properties Rules of the game 2-7-1 Properties Properties are the rules of the game. If the rules are changed a different kind of math is played."— Presentation transcript:

1

2 Number Properties Rules of the game 2-7-1

3 Properties Properties are the rules of the game. If the rules are changed a different kind of math is played. These properties are for everyday math.

4 Commutative Property Order doesn’t matter

5 Commutative Property Commutative property of addition. –a + b = b + a –7 + 8 = –(-3)+4=4+(-3) –The commutative property says the order doesn’t matter for addition.

6 Commutative Property Commutative property of addition. –a + b = b + a –7 + 8 = –(-3)+4=4+(-3) –The commutative property says the order doesn’t matter for addition.

7 Associative Property Grouping Doesn’t Matter

8 Associative Property Associative property of addition –(a+b)+c = a+(b+c) –(7+8)+2=7+(8+2) –15+2 = –The associative property says the grouping doesn’t matter for addition.

9 Associative Property Associative property of multiplication. –(axb)xc=ax(bxc) –(7x8)x2=8x(7x2) –56x2=8x14 –The associative property says the grouping doesn’t matter for multiplication.

10 Identity No change

11 Identity An identity for a particular operation doesn’t change the identity of the number when the operation is done.

12 Identity Additive Identity is 0 –a+0=a –7 + 0 =7 –Zero plus a number is that number.

13 Identity Multiplicative Identity is 1 –1xa=a –8x1=8 –One times a number is that number.

14 Inverse Opposite

15 Inverse Additive inverse - opposite Another number that added to the original number is equal to the additive identity. 0 Multiplicative inverse Another number that multiplied by the original number is equal to the Multiplicative identity. 1

16 Distributive Property Connecting Addition to Multiplication

17 Distributive Property Distributive property –a(b+c)=ab+ac –example –Multiplying a sum by some number is the same as multiplying each term by that same number.

18 Identify the Properties 3x(4x)=3(4)xx=12x 2 commutative and associative properties of multiplication.


Download ppt "Number Properties Rules of the game 2-7-1 Properties Properties are the rules of the game. If the rules are changed a different kind of math is played."

Similar presentations


Ads by Google