Lesson 3: Decimals

What is a decimal?

A special type of fraction that uses a decimal point to separate whole numbers from fractional parts.

How do you read the decimal 0.1?

It is read as 'one-tenth'.

What does the hundreds place represent in a decimal?

It represents whole numbers; for example, in 362.147, the hundreds place is 3 (300).

What are the steps to add decimals?

Step 1: Line up the decimal points. Step 2: Add or subtract as you would with whole numbers.

What should you always do before hitting '=' on a calculator?

Double-check that numbers are lined up correctly.

How do you subtract decimals?

Line up the decimal points, add a 0 if necessary, and then subtract normally.

What is a key concept regarding place values?

Whole numbers get bigger as they move left, while decimal numbers get smaller as they move right.