Letter To Family - Operations With Whole Numbers And Decimals
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1Chapter 1 1
What We’re Learning
Vocabulary
ten thousandth One of 10,000
During the next few weeks, our math class
equal parts.
will be learning about operations with
hundred thousandth One of
whole numbers and decimals. You can
100,000 equal parts.
expect to see work that relates powers of
millionth One of 1,000,000 equal
ten to place value. Use the information
parts.
shown below as a guide to help your child.
Guiding Your Child
Place Value and Powers of 10
Exponents
Power of 10
Standard Form
Fractional Form
Place Value
The exponents are positive for numbers greater
10,000
Ten
4
10
10,000
than 1 and negative for numbers less than 1. The
thousands
1
exponent for 1 is zero.
1,000
1,000
Thousands
3
10
1
Patterns of Zeros
100
2
10
100
Hundreds
For numbers greater than 1, the exponent tells the
1
number of zeros in the numerator of the fractional
10
1
10
10
Tens
1
form. For numbers less than 1, the exponent tells
1
the number of zeros in the denominator.
0
10
1
Ones
1
1
1
10
0.1
Tenths
10
1
2
10
0.01
Hundredths
100
1
3
10
0.001
Thousandths
1,000
1
Ten
4
0.0001
10
thousandths
10,000
You can write whole numbers and decimals in expanded form, using powers of 10.
654.25
(6
10
2
)
(5
10
1
)
(4
10
0
)
(2
10
-1
)
(5
10
-2
)
Sincerely,
Your child’s teacher
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