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Key
Idea
There are many
patterns in our
system for naming
numbers. |
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Materials
calculator |
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Place-Value
Patterns |
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How
are place values related? |
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| a. |
Enter 1,000 into your calculator.
Divide by 10. Record your result.
Divide the result by
10 and record your result. Continue to do this 5 more times. |
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| b. |
Repeat part
a by starting with each of the
following numbers. |
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4,000 |
7,000 |
85,000 |
| c. |
Place value can be used
to name a number such
as 5,000 in different ways. Describe the patterns
you see in the table below. |
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| 5
thousands or 5 x 1,000 |
| 50
hundreds or 50 x 100 |
| 500
tens or 500 x 10 |
| 5,000
ones or 5,000 x 1 |
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| d. |
Refer to the patterns
in part c. Then complete
each sentence
with ones, tens, hundreds,
or thousands. |
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3,000 is 30 ____. |
7,000 is 700 ____. |
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4,000 is 4,000 ____. |
9,000 is 9 ____. |
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e. |
Use
a calculator to find the products on the left.
Use the results to complete the sentences
on the right. |
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| 0.9 x 10
= ____ |
So, 9 = 0.9 x ____. |
| 0.9 x 100 = ____ |
So, 90 = 0.9 x ____. |
| 0.9 x 1,000 = ____ |
So, 900 = 0.9 x ____. |
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