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denominator is a power of ten. That is, the denominator is 10 or 100 or

1000 or 10,000, etc.

Being a "power of ten" simply means that the denominator is 10

multiplied by itself a certain number of times. The "power" shows how

many times 10 is multiplied by itself to obtain the number. The number

1000, for example, is 10 x 10 x 10. This shows that 1000 is 10

multiplied by itself three times. 1000 is 10 to the third power (usually

written as 103).

a. What is the denominator of a fraction if the denominator is equal to 10

to the sixth power?

b. What is the denominator of a fraction if the denominator is equal to 10

to the first power?

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Solution to

Frame 3-1.

place value. A decimal point (period or dot) is used to separate the

whole number from the decimal numerals (fraction). Like the place

n

values shown in Frame 1-2, each place value has a name. Like whole

1,000,000

numbers, the value decreases by one-tenth (1/10) each time you move to

the right. (Likewise, the place value increases by 10 if you go to the left.)

n

The names of some of the place values are shown below.

10

Note: If the entire number has a value that is less than one (there are no

(the "n" represents the

whole numbers to the left of the decimal), a zero is usually placed in the

numerator.)

ones place to make reading easier (it emphasizes the decimal point).

NOTE: Commas are not used to the right of the decimal.

What would you call the eighth and ninth places to the right of the

decimal?

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MD0900

3-2

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