Transcript Place Value Vocabulary and Powerpoint File

Place Value
Goals
Read, write, compare and order whole numbers
By the end of this lesson you will be able to:
• Use digits place value to read whole numbers.
• Use digits place value to write in words whole
numbers.
• Understand standard, expanded and word form
of a number.
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Digits: are single symbols from 0 to 9 that
are used to form numbers.
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Place Value is how our number system
works. Without it we wouldn't be able to
write large numbers.
Just think.... with just 10 digits - 0,1,2,3,4,5,6,7,8,9, we
can write ANY number we choose!
521
-1,940
-10,386
-32,465,789
We need letters to make words and we
need digits to make numbers
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The value of a digit (what it's worth) depends on its
place (where it is in the number).
Therefore we have the term PLACE... VALUE.
Get it? COOL!
So a 2 could be worth 2...20...200... and into the
thousands,
millions,
billions,
trillions,
and so on,
and so on,
and so ON!
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Place Value: Value of the digit depend on
the position they are at within the number.
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There are period houses. Each house has
three rooms
THOUSANDS
Units
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THOUSANDS
ONES
571,324 : Five hundred seventy one thousand three hundred
twenty four
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Standard form of a number: is the way
we normally write numbers.
Example number
This is the standard form of Five Hundred
Forty Nine
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Expanded form: a number written as the
sum of the values of its digits
Example number
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Word Form: numbers written in words.
1.
2.
3.
4.
Start from left to right.
Read every room on the house first.
Read the name of the house.
Go to the neighbor's house and repeat
the process.
Example read number
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Tip
Do not use “and” when reading whole
numbers. The word “and” will be used
when you are reading numbers with
decimals.
690,492
Six hundred and ninety-thousand,
and four hundred and ninety-two.
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THOUSANDS
ONES
Fifty three Thousand Nine hundred sixty two
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1 ten is
10 times 1 one
10
1
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1 hundred is
10 times 1
ten
100
10
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1 thousand is 10 times 1 hundred
1,000
100
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10 thousand is 10 times 1 thousand
10,000
1,000
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Ones
Thousands
Numbers are divided into periods
690,492
Periods are separated by commas.
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Remember that each period has
three place values within the period
Thousands Ones
6 9 0, 4 9 2
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What digit is in the hundred’s place?
Thousands Ones
6 9 0, 4 1 2
4
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What digit is in the ten thousand’s place?
Thousands Ones
6 9 0, 4 1 2
9
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What digit is in the thousand’s place?
Thousands Ones
6 9 0, 4 1 2
0
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What digit is in the hundred thousand’s
place?
Thousands Ones
6 9 0, 4 1 2
6
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What digit is in the hundred’s place?
7 4 3, 9 8 2
9
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What digit is in the ten thousand’s place?
7 4 3, 9 8 2
4
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What digit is in the thousand’s place?
7 4 3, 9 8 2
3
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What digit is in the hundred thousand’s
place?
7 4 3, 9 8 2
7
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What is the value of the underlined digit?
7 4 3, 9 8 2
Ten thousand
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What is the value of the underlined digit?
7 4 3, 9 8 2
Thousand
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What is the value of the underlined digit?
7 4 3, 9 8 2
Hundred thousand
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What is the value of the underlined digit?
7 4 3, 9 8 2
Hundred
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What is the value of the underlined digit?
7 4 3, 9 8 2
Ten
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What is the value of the underlined digit?
7 4 3, 9 8 2
One
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Read this number
133,472
One hundred thirty-three thousand,
four hundred seventy-two
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Read this number
643,582
Six hundred forty-three thousand,
five hundred eighty-two
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Read this number
54,931
Fifty-four thousand,
nine hundred thirty-one
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Read this number
530,801
Five hundred thirty thousand,
eight hundred one
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Read this number
4,268
Four thousand,
two hundred sixty-eight
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Read this number
305,108
Three hundred five thousand,
one hundred eight
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