Terminating and Repeating Decimals
6-15
0. 625
^5
8
8 5 .0 0 0^58 0. 6250. 27272...
131 11 3 .0 0 0 0 0 131 0. 2727...Alberto plays baseball for the Piney Creek Wildcats.
In his first 30 times at bat, he gets 10 hits.
Write his batting average as a decimal.
0. 3333...
Rename
1
30
0 as an equivalent decimal. 3 0^1 ^0 .0^0 ^0 ^0No matter how many zeros you write in the dividend,
the division just keeps on going. When the same
digit(s) repeat in the quotient, you have a
repeating decimal.Alberto’s batting average is 0.3333... , or 0.333
when rounded to the nearest thousandth.Every fraction can be renamed as a
terminating decimal or a repeating decimal.A terminating decimal has a
definite number of decimal places.
When you divide, the remainder
is 0.A repeating decimal has one
or more digits that repeat
indefinitely. When you divide,
the remainder is never zero.Repeating decimals may be written with a barover
the digit or digits that repeat.0.2727... 0.2 7 bar 5.13636.. .5.13 6 barThink
The digits 2 and 7
repeat indefinitely.Think
The digits 3 and 6
repeat indefinitely. The
digit 1 does not repeat.8206-2_206-207 1/12/06 3:53 PM Page 206