Decimal Places

One decimal place to the left of the decimal point is the ones place. One decimal place to the right of the decimal place is the tenths place.

Keep your eye on the 9 to see where the decimal places fall.

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 =

Rational and Irrational NumbersNumbersPrime Numbers

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