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how to do fractions on a scientific calculator ti-84

how to do fractions on a scientific calculator ti-84

What Is the Fraction Button on a Scientific Calculator

The fraction button is a button on any scientific calculator, enabling the user to do an operation as if it were a whole number divided by a fraction.

Fraction

By default, scientific calculators, like regular ones, display fractions as decimals. So if you enter a simple fraction, such as 1/2, the display reads 0.5. Some – but not all – scientific calculators offer a feature that allows you to display fractions without making the conversion. Using this feature, you can enter a complex fraction and simplify it right on your calculator. Calculators with this feature also allow you to enter a number composed of an integer and a fraction, such as 1 1/4. If your calculator doesn't have this feature, you can use a workaround to manipulate fractions.Calculators that display fractions sometimes have a special mode, called Math mode, that you must first select before you can enter fractions. When the calculator is in Math mode, the word "math" appears at the top of the screen. Once you have selected this mode (if necessary), look for a button with two boxes, one black and one white, arranged on top of each other with a horizontal line between them. This is the fraction button. On some models, the button may show x/y or a b/c. Pressing this button enables the fraction feature.

When you press the fraction button, a fraction template appears in the display. It sometimes consists of two blank boxes arranged one over the other and separated by a horizontal line. The cursor will appear in the top box. You can now enter the numerator of the fraction. (Source: sciencing.com)

Dispaly

You can't convert a decimal to a fraction on the calculator, but the calculator can help you do it with a pencil and paper. Suppose you want to express 0.7143 as a fraction. You could write it as 7143/10,000, but maybe you want to reduce this to something a lot more simple, such as a denominator that's a single digit. To do this, enter the original number as decimal, and then multiply by the desired denominator. This gives you the numerator of the fraction. For example, if you want a fraction with 7 in the denominator, multiply 0.7143 by 7. The calculator will display the numerator, which in this case is 5.0001, which is close enough to 5 to be equal. You can then write the fraction 5/7 on a piece of paper.

button in the left-hand column of the function key area of the calculator keypad. This displays a fraction ‘template’ on the display – as shown in Figure 8 below – that contains boxes that need to be ‘filled in’. When the button is first pressed, the cursor is located in the top box ready for you to enter the numerator. To move to the bottom box to enter the denominator, use the cursor down keIf a severe error is made when entering a calculation into the calculator, it may prevent the answer being calculated at all, as the calculation may not make mathematical sense. In such circumstances a ‘Syntax Error’ will be displayed as shown in Figure 6. The Syntax Error screen gives you two options: (Source: www.open.edu)

 

 

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