Conversion of decimals to fractions — lesson. Mathematics State Board, Class 7.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Rules to convert decimals to fractions:

Step 1: Write the decimal number in the numerator and remove the decimal point.

Step 2: In the denominator, followed by

$1$ add the number of zeroes that were equal to the number digits present after the decimal point.

Step 3: Write the lowest fraction by dividing numerator and denominator by the common factor.

Example:

1. Convert

$54.63$ to fraction.

Step 1: Write

$54.63$ as

$5463$ in the numerator.

Step 2: There are two digits after the decimal point. So add two zeros in the denominator followed by

$1$ .

Therefore, the fraction is

$\frac{5463}{100}$ .

2. Write

$3.2$ as the lowest fraction.

Step 1: Write

$3.2$ as

$32$ in the numerator.

Step 2: There is one digit after the decimal point. So add one zero in the denominator followed by

$1$ . The fraction is

$\frac{32}{10}$ .

Step 3: The common factor in the numerator and denominator is

$2$ . Divide numerator and denominator by

$2$ .

$\frac{32 \div 2}{10 \div 2} = \frac{16}{5}$

Therefore, the lowest fraction is

$\frac{16}{5}$ .

3. Write

$399.95$ as lowest fraction.

Step 1: Write

$399.95$ as

$39995$ in the numerator.

Step 2: There is two digit after the decimal point. So add two zeros in the denominator followed by

$1$ . The fraction is

$\frac{39995}{100}$ .

Step 3: The common factor in the numerator and denominator is

$5$ . Divide numerator and denominator by

$5$ .

$\frac{39995 \div 5}{100 \div 5} = \frac{7999}{20}$

Therefore, the lowest fraction is

$\frac{7999}{20}$ .

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1. Conversion of decimals to fractions

Theory: