How do you convert decimals to fractions on the TI 85?

Answer 1

Example: 3/4 + 7/5

• Input 3, press [/], and input 4

• Press the [+] key

• Input 7, press [/], and input 5

• Press the [2nd] [MATH] [F5] [MORE]

• Select [F1] (the convert-to-fraction function)

• Press the [ENTER] key

The result displayed should be 43/20.

Example: (25_4/7) - 9/16

• Press [(], input 25, and press [+]

• Input 4, press [/], input 7, and press [)]

• Press the [-] key

• Press [(], input 9, press [/], input 16, and press [)]

• Press the [2nd] [MATH] [F5] [MORE]

• Select [F1]

• Press the [ENTER] key

The result displayed should be 2801/112.

Example: 8/4 x 6/15

• Input 8, press [/], and input 4

• Press the [x] key

• Input 6, press [/], and input 15

• Press the [2nd] [MATH] [F5] [MORE]

• Select [F1]

• Press the [ENTER] key

The result displayed should be 4/5.

Example: (5_8/13) / (9/23)

• Press [(], input 5, press [+],

• Input 8, and press [/], input 13, and press [)]

• Press the [/] key

• Press [(], input 9, press [/], input 23, and press [)]

• Press the [2nd] [MATH] [F5] [MORE]

• Select [F1]

• Press the [ENTER] key

The result displayed should be 1679/117.