Transcript Reading and Writing Decimals

Reading & Writing
Whole Numbers
Vocabulary:
1. Whole Number – The counting numbers 0, 1, 2, 3,
4, 5, 6, 7, 8, and 9. Any number with a negative
sign, decimal point or a fraction is NOT a whole
number.
2. Standard Form – The common way of writing a
number using digits.
Example: 23, 119
3. Word Form – A way of using words to write a
number.
Example: Twenty-three thousand, one hundred nineteen
4. Expanded Form – A way to write a number showing
the place value of each digit.
Example: 20,000 + 3,000 + 100 + 10 + 9
Real Life Example:
Review:
Whole Numbers
Decimal (“ths”)
Whole Number Place Values
Lets review the places and the values of whole numbers.
Thousands
Ones
Hundred
Ten
Thousands Thousands Thousands Hundreds
100,000
10,000
1,000
100
,
Comma
Tens Ones
10
1
.
Decimal
Point
Reading Whole Numbers:
1. Read whole numbers from left to right.
2. When you reach a comma, say the
name of the period you passed.
385,602
Three hundred eighty five thousand, six hundred two
Standard Form
• Standard form is the normal way to
write a number using digits.
74,832
Ex: Write the number in standard form.
1. 20,000 + 7,000 + 500 + 30 + 8
27,538
2. Three hundred five thousand, six
hundred twenty-two
305,622
If there is a place value spot with a
missing value, use a 0 to hold it’s spot.
Expanded Form
1. Expanded form is a way to write a
number showing the place value of
each digit.
74,832
70,000 + 4,000 + 800 + 30 + 2
Ex: Write the number in expanded form.
1. 685,977
600,000 + 80,000 + 5,000 + 900 + 70 + 7
2. 43,098
40,000 + 3,000 + 90 + 8
Remember, 0’s do not have a value so
we do not include them in expanded form.
Word Form
1. Word form is a way of using words to
write a number.
74,832
Seventy-four thousand, eight hundred thirty-two
Ex: Write the number in word form.
1. 780,421
Seven hundred eighty thousand, four
hundred twenty-one
2. 31,775
Thirty-one thousand, seven hundred
seventy-five
We put commas in word form numbers
just like we do in standard form numbers.
Practice:
1. What is three hundred seventy-four
thousand, one hundred nineteen in
standard form?
2. Mount Everest is 29,028 feet above sea level.
Write this number in expanded form.
Practice:
1. What is 560,314 in expanded form?
2. The White House is where the President lives.
It is located in our nation’s capital,
Washington DC. The population there is
591,833. What is that in word form?
Practice:
1. What is 37,975 in word form?
2. The land area of Tennessee is forty-one
thousand, two hundred twenty square
miles. What is Tennessee’s land area in
standard form?