Letter To Family - Value Of Numbers Through Hundred Millions And Money

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Chapter 1 1
What We’re Learning
Vocabulary
estimate A number close to an
During the next few weeks, our math class
exact amount. An estimate tells about
will be learning about place value of numbers
how much or about how many.
through hundred millions and about money.
rounding To find about how many
You can expect to see work that provides
or how much by expressing a number
practice with comparing, ordering, and
to the nearest ten, hundred, thousand,
rounding numbers as well as counting and
and so on.
comparing collections of coins.
As we learn how to round numbers, you may
wish to use the following sample as a guide.
Guiding Your Child
Rounding to the Nearest Hundred
To round a number such as 4,175 to the nearest hundred,
hundreds place
first find the digit in the rounding place (1).
4,175
Next, look at the digit in the place to the right
of the rounding place (7).
greater than 5
• If this digit is less than 5, do not change
the digit in the rounding place.
• If it is greater than or equal to 5, increase
the digit in the rounding place by 1.
• Then change all of the digits to the right
of the rounding place to zeros.
Since the digit to the right of the hundreds place is 7 and 7 is
greater than 5, 4,175 rounded to the nearest hundred is 4,200.
Knowing about place value of greater numbers and money will help
students solve problems using these kinds of numbers.
Sincerely,
Your Child’s Teacher

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