Placing Decimals with Multiplication

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (decimal point) separating the whole number from the fractional part.

Front

How do you multiply a decimal by a whole number?

Back

To multiply a decimal by a whole number, multiply as if there is no decimal, then place the decimal point in the product based on the number of decimal places in the original decimal.

Front

What is the product of 7.87 and 9?

Back

70.83

Front

What is the product of 9 and 3.83?

Back

34.47

Front

What is the product of 6.48 and 2?

Back

12.96

Front

What is the product of 2.456 and 5.8?

Back

14.2448

Front

What is the product of 8 and 9.812?

Back

78.496

Front

How do you determine where to place the decimal in a product?

Back

Count the total number of decimal places in the numbers being multiplied. The decimal in the product should be placed so that it has the same number of decimal places.

Front

What happens to the decimal point when multiplying two decimals?

Back

The decimal point in the product is determined by the total number of decimal places in both factors.

Front

If you multiply 0.5 by 10, what is the product?

Back

5.0