I have forgotton how to change a decimal into a fraction can you please give me the formula.
for example for:
-2.75
You just have to move the decimal two places to the right and put it over 100.
If you multiply a number by some factor and divide it by the same factor it stays the same. In this case multiply and divide by 100. Then you got a fraction. Then simplify that fraction by dividing out common factors in the numerator and denominator.
To change a decimal into a fraction, you can use the following formula:
1. Count the number of decimal places in the original decimal number.
2. Write down the decimal number as the numerator (top number) of the fraction.
3. Write down the number 1 followed by the same number of zeroes as the decimal places in the denominator (bottom number) of the fraction.
For example, for the decimal -2.75:
1. There are two decimal places in -2.75.
2. Write down -2.75 as the numerator: -2.75
3. Write down 1 followed by two zeroes as the denominator: 100
Next, you can simplify the fraction by dividing out common factors in the numerator and denominator. In this case, you can divide both -2.75 and 100 by 25:
-2.75 ÷ 25 = -0.11
100 ÷ 25 = 4
Therefore, the fraction for -2.75 is -0.11/4.