how do i convert decimal fraction into common fraction

It depends upon how many digits follow the decimal point. For example

0.1 = 1/10
0.34 = 34/100 = 17/50
0.756 = 756/1000 = 189/250
etc.
Try to reduce each fraction to simplest terms, if there is a common factor in the numerator and denominator, as I have done for the last two.

K

31

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2

0.482 x 1.9

To convert a decimal fraction into a common fraction, you can follow these steps:

Step 1: Identify the decimal fraction. For example, let's say the decimal fraction is 0.75.

Step 2: Determine the place value of the decimal. In this case, 0.75 is in the hundredth place since the digit 5 is two places after the decimal point.

Step 3: Write the decimal fraction as a fraction with the denominator based on the place value. Since 0.75 is in the hundredth place, the denominator will be 100.

Step 4: Write the numerator as the decimal number without the decimal point. In this case, the numerator will be 75.

Step 5: Simplify the fraction by dividing both the numerator and the denominator by their greatest common divisor (GCD). In this case, the GCD of 75 and 100 is 25, so divide both by 25.

Step 6: The final fraction is the simplified fraction obtained in step 5. In this example, the final fraction is 3/4.

Therefore, the common fraction equivalent of 0.75 is 3/4.