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Properties of Real Numbers 7182 Views


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Description:

Properties of Real Numbers

Language:
English Language

Transcript

00:00

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

00:08

algebra the math A magician has some magical mass tricks

00:12

to show you My algebra has a card trick that

00:15

will demonstrate the community of properties of addition and multiplication

00:20

just like a pair of jacks is a pair No

00:22

matter what order do you have The cards in community

00:25

of properties means you can move around the numbers in

00:28

an addition or multiplication equation and it still works For

00:33

example four plus five is the same as five plus

00:37

four the same with five times for or four times

00:42

Five Associative property says that you can move whole groups

00:49

around and it still works Using the parentheses you can

00:53

change the groups For example if you have three x

00:57

minus four x plus six with parentheses around three x

01:02

and four ax The parentheses can also be around four

01:06

Acts and 6 without changing its meaning With multiplication you

01:11

have three times two Acts with 2 x in parentheses

01:15

You can put three times two in parentheses with ex

01:18

waiting outside But remember that with both community of an

01:21

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

01:29

her final trick mme algebra will demonstrate the magical powers

01:32

of additive and multiplication of identity Now we just need

01:36

her sister gramatica Help us pronounce multiplication tive additive identity

01:42

means you can add zero to any number and get

01:45

the same number its identity Okay for example three plus

01:50

zero equals three nine hundred seven plus zero equals nine

01:55

hundred seven Finally multiplication of identity means you can multiply

01:59

one by any number and get its identity three times

02:03

One equals three nine hundred seven times One equals nine

02:07

hundred seven A magician never reveals her secrets but a

02:10

math a magician ducks You might not be able to

02:14

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

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