**How to Remember the Laws of Math**

Commutative Law

Distributive Law

Associative Law

To remember this, think about your friends (associates) who you like. You will put your arms around one, then the other.

It doesn't matter which one you put your arms around first, you like them both the same.

So when you add or multiply these numbers in a different order, you will always end up with the same result.

Commutative Law

You can swap the order of the numbers and still come up with the same answer.

Commutative Law

To remember this think what the word "commute" means. It means to travel.

So the variables move around; but the order doesn't matter because you get the same answer. Whether you come in first or second, the order doesn't matter.

Remember: even though you can move the items around, the result is the same. Coming in first or second doesn't matter.

Addition:

a+b=b+a

Multiplication:

ab=ba

Distributive Law

This is were multiplication distributes over addition. The addition sign stays in between.

a(b+c)=ab+ac

3(4+5)=(3*4) + (3*5)

Distributive Law

Think about a bottling company. They make water bottles, then they "distribute" or send it to other places. They like to "share" themselves with others.

Distributive Law

Be careful with this one. Make sure you multiply a and b, then write down the plus sign, then multiple a and c together. Don't forget to multiply first, then do the addition.

Confidently know which law to use.

Sometimes it's hard to remember which math law is which.

These pictures should help you remember.

Commutative Law

Distributive Law

Associative Law

Associatiave Law

http://www.childhope.org/news/photos/LittleGirlBFFs-2.jpg

Associative Law

It doesn't matter how you group the numbers when you add or multiply, you will still come up with the same answer.

Addition:

a+(b+c)=(a+b)+c

2+(3+4)=(2+3)+4=9

Multiplication:

a(bc)=(ab)c

2*(3*4)=(2*3)*4=24

http://www.cslctx.org/wp-content/uploads/2011/09/0511120558021friendship-f22.jpg

Tip to Remember:

"b" is buddies with everybody

Addition:

a+(b+c)=(a+b)+c

Multiplication:

a(bc)=(ab)c

Associative Law

http://24.media.tumblr.com/tumblr_m3pyt5MxaU1rn2d9uo1_500.jpg

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Addition:

a+b=b+a

3+4 = 4+3 = 7

Multiplicatin:

ab=ba

5*6 = 6*5 = 30

Remember the pictures that go with the laws to help you remember.

For more help with these and other math topics, go to www.mathisfun.com

Tips

**by Mrs. Nichols**

Commutative Law

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