Properties of Real Numbers

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matter what order do you have The cards in community

of properties means you can move around the numbers in

an addition or multiplication equation and it still works For

example four plus five is the same as five plus

four the same with five times for or four times

Five Associative property says that you can move whole groups

around and it still works Using the parentheses you can

change the groups For example if you have three x

minus four x plus six with parentheses around three x

and four ax The parentheses can also be around four

Acts and 6 without changing its meaning With multiplication you

have three times two Acts with 2 x in parentheses

You can put three times two in parentheses with ex

waiting outside But remember that with both community of an

associative properties it doesn't work with subtraction or division For

her final trick mme algebra will demonstrate the magical powers

of additive and multiplication of identity Now we just need

her sister gramatica Help us pronounce multiplication tive additive identity

means you can add zero to any number and get

the same number its identity Okay for example three plus

zero equals three nine hundred seven plus zero equals nine

hundred seven Finally multiplication of identity means you can multiply

one by any number and get its identity three times

One equals three nine hundred seven times One equals nine

hundred seven A magician never reveals her secrets but a

math a magician ducks You might not be able to

make any money doing these tricks but they might make 00:02:17.71 --> [endTime] math class a little easier