Convert between fractions and decimals
Turn 0.75 into 3/4, or 3/8 into 0.375.
Classic Graphing 84
Start on the main screen: Press 2nd then mode (QUIT) to get back to the home screen. Pressing clear on a menu also backs out of it.
Type 0.75, then choose ►Frac from the MATH menu (item 1) and press enter.
0.75math1enterNow type 3 ÷ 8, choose ►Dec (MATH item 2) and press enter.
3÷8math2enter
You should see0.75►Frac 3/4 3/8►Dec .375
Classic Scientific 30
Start on the main screen: Press 2nd then mode (QUIT) to leave any menu or screen and return to the calculation screen.
Make the fraction 3 over 8: n/d, 3, then the bottom 8. Press enter.
3n/d8▶enterPress the fraction-decimal toggle key to swap between 3/8 and 0.375.
◄►
You should see3/8 0.375
Natural Scientific 991
Start on the main screen: Press MENU, then 1 (Calculate) to return to the main calculation screen. AC clears the line you are on.
Make the fraction 3 over 8 with the fraction key, then press =.
/3▼8=Press S⇔D to flip between fraction and decimal.
S⇔D
You should see3/8 0.375
Tips
- Not every decimal has a short fraction. A long decimal such as 0.3333333333 may turn out to be 1/3, but a value like 1.414213562 will not become a neat fraction.