### Theory:

Often we meet fractions with denominators of \(10, 100, 1000\), etc.

For example, \(1\) g \(=\) $\frac{1}{1000}$kg, \(1\) mm \(=\) $\frac{1}{10}$ cm, \(4\) cm \(3\) mm \(=\) $4\frac{3}{10}$ cm, etc.

For example, \(1\) g \(=\) $\frac{1}{1000}$kg, \(1\) mm \(=\) $\frac{1}{10}$ cm, \(4\) cm \(3\) mm \(=\) $4\frac{3}{10}$ cm, etc.

Numbers with denominators of \(10, 100, 1000\), etc., agreed to write down without a denominator.

First, write the integer part, and then the numerator of the fractional part. The whole number part is separated from the fractional part by a point.

First, write the integer part, and then the numerator of the fractional part. The whole number part is separated from the fractional part by a point.

For example, instead of $4\frac{3}{10}$, we write \(4.3\) (we read: "\(4\) integers and \(3\) tenths").

Instead $5\frac{19}{100}$ we write \(5.19\) (we read: "\(5\) as a whole and \(19\) hundredths").

Instead $5\frac{19}{100}$ we write \(5.19\) (we read: "\(5\) as a whole and \(19\) hundredths").

Any number whose denominator of the fractional part is expressed as one with one or more zeros can be represented as a decimal fraction. If the fraction is correct, then the digit \(0\) is written before the decimal point.

For example, instead of $\frac{21}{100}$, we write \(0.21\) (we read: "\(0\) integers and \(21\) hundredths").

Important!

After the decimal point, the numerator of the fractional part should have as many digits as there are zeros in the denominator.