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Thank you We sneak in properties of real numbers I'm

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algebra the math A magician has some magical mass tricks

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to show you My algebra has a card trick that

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will demonstrate the community of properties of addition and multiplication

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just like a pair of jacks is a pair No

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matter what order do you have The cards in community

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of properties means you can move around the numbers in

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an addition or multiplication equation and it still works For

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example four plus five is the same as five plus

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four the same with five times for or four times

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Five Associative property says that you can move whole groups

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around and it still works Using the parentheses you can

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change the groups For example if you have three x

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minus four x plus six with parentheses around three x

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and four ax The parentheses can also be around four

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Acts and 6 without changing its meaning With multiplication you

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have three times two Acts with 2 x in parentheses

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You can put three times two in parentheses with ex

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waiting outside But remember that with both community of an

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

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her final trick mme algebra will demonstrate the magical powers

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of additive and multiplication of identity Now we just need

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her sister gramatica Help us pronounce multiplication tive additive identity

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means you can add zero to any number and get

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the same number its identity Okay for example three plus

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zero equals three nine hundred seven plus zero equals nine

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hundred seven Finally multiplication of identity means you can multiply

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one by any number and get its identity three times

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One equals three nine hundred seven times One equals nine

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hundred seven A magician never reveals her secrets but a

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math a magician ducks You might not be able to

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

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