1. Writing and reading decimal

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.

 

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.

 

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").

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

Therefore, for example, the number $1\frac{3}{100}$ should be written like this: \(1.03\) (read: "\(1\) whole and \(3\) hundredths").