decimal notation
nounUK /ˈdɛsɪməl nəʊˈteɪʃən/
US /ˈdɛsɪməl noʊˈteɪʃən/
A way of writing numbers using a dot to show parts smaller than one.
In decimal notation, three and a half is written as 3.5.
RELATED WORDS
OTHER MEANINGS
2. A system for writing numbers that uses ten different digits and place values based on powers of ten.
Students learn decimal notation before they study fractions in depth.
3. The standard way of writing amounts of money with a dot separating whole units from cents.
Prices on the menu are shown in decimal notation, like $4.99.
4. A method of expressing a fraction as a number with a decimal point instead of a numerator and denominator.
One quarter becomes 0.25 in decimal notation.