Fractions; Fractions And Decimals - Sharp EL-9900 Handbook Vol. 1 Operation Manual

Fractions and Decimals

To convert a decimal into a fraction, form the numerator by multiplying the decimal by 10
where n is the number of digits after the decimal point. The denominator is simply 10
reduce the fraction to its lowest terms.
Example
Convert 0.75 into a fraction.
Before
There may be differences in the results of calculations and graph plotting depending on the setting.
Starting
Return all settings to the default value and delete all data.
We recommend using the Basic keyboard to calculate fractions.
Step & Key Operation
1
Choose the manual mode for
reducing fractions.
H
2nd F SET UP
2
Convert 0.75 into a fraction.
.
CL 0 7
3
Reduce the fraction.
Simp ENTER
4
Enter 3 to further reduce the
fraction.
Simp 3
ENTER
5
Enter 5 to reduce the fraction.
Simp 5
ENTER
The EL-9900 can easily convert a decimal into a fraction. It also helps
students learn the steps involved in reducing fractions.
2
b /c
5
ENTER
EL-9900 Graphing Calculator
Display
The fraction can be reduced
by a factor of 5.
The fraction cannot be re-
duced by a factor of 3, even
though the numerator can be.
(15 = 3 x 5)
0.75 = 3/4
n
,
n
. Then,
Notes
1-1