Exercise 130 Page 124

We want to write the given fraction as a decimal. 13/9 We can do so by dividing the numerator, 13, by the denominator of the fraction, 9.

Notice that our decimal is a repeating decimal. In this case, we can rewrite the decimal using a bar notation. 1.444444... =1.4 We found that 139 expressed as a decimal is 1.4.

We want to write the given fraction as a decimal. 7/8 We can do so by dividing the numerator, 7, by the denominator, 8.

We found that 78 expressed as a decimal is 0.875.

We want to write the given decimal as a fraction. 0.204 To write a decimal as a fraction, we start by writing the number as the numerator and 1 as the denominator. 0.204=0.204/1 Then, we can find an equivalent fraction with a whole number numerator. It is usually easiest to multiply by a power of 10 and then simplify.

0.204/1

ExpandFrac

a/b=a * 1000/b * 1000

0.204* 1000/1* 1000

Multiply

204/1000

We found that 0.204 expressed as a fraction is 2041000.

We want to write the given decimal as a fraction. 0.47 To write a decimal as a fraction, we start by writing the number as the numerator and 1 as the denominator. 0.47=0.47/1 Then, we can find an equivalent fraction with a whole number numerator. It is usually easiest to multiply by power of 10 and then simplify.

0.47/1

ExpandFrac

a/b=a * 100/b * 100

0.47* 100/1* 100

Multiply

47/100

We found that 0.47 expressed as a fraction is 47100.