Place Value
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Place Value. What do you understand By Place Value?. Can you explain the ideas behind Place Value?. Why is it so important?. Digits . All numbers are made from digits. Each digit in its right place gives a number its value. What are the digits?.

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Place Value

What do you understand

By Place Value?

Can you explain the ideas

behind Place Value?

Whyis it so important?


Slide2 l.jpg

Digits

All numbers are made from digits.

Each digit in its right place gives

a number its value.

What are the digits?

Yep 3 4 1 8 9 0 5 6 7 2


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So lets try that out.

1 4 6

How do you know the value of this number?

Saying it out loud

one hundred and forty six gives a clue.

H

T

U

1

4

6

100

40

6

Each digit has a place.

Each place has a value.


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Another way of showing

Place Value is to use an abacus

1

1

10

1

10

1

10

1

10

1

100

U

H

T

146

One hundred and forty six


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Lets try a bigger number.

1

1

100

10

1

10

1000

100

1

100

10

1000

1

U

Th

H

T

2 335

Two thousand three hundred and thirty five.


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Building Numbers with Place Value Grids

Units 1 2 3 4 5 6 7 8 9

Tens 10 20 30 40 50 60 70 80 90

Hundreds 100 200 300 400 500 600 700 800 900

Thousands 1000 2000 3000 4000 5000 6000 7000 8000 9000

Th H T U


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Place Value Grid

Units 1 2 3 4 5 6 7 8 9

Tens 10 20 30 40 50 60 70 80 90

Hundreds 100 200 300 400 500 600 700 800 900

Thousands 1000 2000 3000 4000 5000 6000 7000 8000 9000

Tens of thousands 10 000 20 000 30 000 40 000 50 000 60 000 70 000 80 000 90 000

Hundreds of Thousands 100 000 200 000 300 000 400 000 500 000 600 000 700 000 800 000 900 000

HTh TTh Th H T U



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