0Keep your eye on the 9 to see where the decimal places fall.
| millions | 9,000,000.0 |
| hundred thousands | 900,000.0 |
| ten thousands | 90,000.0 |
| thousands | 9,000.0 |
| hundreds | 900.0 |
| tens | 90.0 |
| ones | 9.0 |
| tenths | 0.9 |
| hundredths | 0.09 |
| thousandths | 0.009 |
| ten thousandths | 0.0009 |
| hundred thousandths | 0.00009 |
| millionths | 0.000009 |
Adding and Subtracting Decimals
To add or subtract decimals, line up the decimal points and use zeros to fill in the blanks:
9 - 2.67 =
9.00
-2.67
6.33
