What is a Decimal?

A decimal is another way to show parts of a whole, just like fractions! Decimals use a dot (.) to separate the whole number from the part of the number.

Place Value in Decimals

Each digit after the decimal point has a special name:

• Tenths: \( 0.1 \) means 1 part out of 10
• Hundredths: \( 0.01 \) means 1 part out of 100

Comparing Decimals and Fractions

Decimals and fractions can mean the same thing. For example, \( 0.5 \) is the same as \( \frac{1}{2} \).

Everyday Decimals

Decimals are everywhere! You see them when looking at prices in stores, measuring lengths, or reading a thermometer.

Real-World Uses

• Money ($2.75 is two dollars and seventy-five cents)
• Measuring distances (1.5 meters)