A world of numbers

DECIMALSBy:Cameron & Karina

64869.67787

WHAT IS A DECIMAL?

A decimal is a number that shows numbers to the right of the decimal point that are between 1 and 0.

The decimal point is to the right of the whole number.

DECIMAL PLACE VALUE

This is a chart of decimal place value.

ORDERING DECIMALS

You order decimals by looking at the decimals value.

1. 3.456, 3.758, 2.342. 2.34, 3.456, 3.758

ROUNDING DECIMALS

You round decimals by looking at the number to the right of the place value you want to round to. If the number to the right is 5 or greater you round up if the decimal is 4 or less you round down.

1. 3.9542. 4

ADDING AND SUBTRACTING DECIMALS

You add and subtract decimals in three steps.

1. You line up the decimal points in both numbers in the problem.

2. You add or subtract just as you would with whole numbers.

3. Align the decimal point in the sum or difference with the decimal points in the numbers above.

MULTIPLYING DECIMALS

There are three steps to multiplying decimals.

1. You line up the decimal points in both factors.

2. Multiply as you would with whole numbers.

3. See how many numbers are to the right of the decimal points in the algorithm and then you put the decimal point that many digits to the left of your product.

DECIMALS ARE AWSOME

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