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# How to Remember the Laws of Math

Helps students remember the difference between the Associative, Commutative and Distributive Laws.
by

## Sandy N

on 29 July 2013

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#### Transcript of How to Remember the Laws of Math

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.

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.

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.

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
Tip to Remember:
"b" is buddies with everybody
a+(b+c)=(a+b)+c

Multiplication:
a(bc)=(ab)c
Associative Law
http://24.media.tumblr.com/tumblr_m3pyt5MxaU1rn2d9uo1_500.jpg
http://www.foxsports.com.au
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
http://www.dreamstime.com
wot.motortrend.com
american-controls.com
Full transcript