Multiplication with decimals

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 x 4 means adding 3 four times (3 + 3 + 3 + 3 = 12).

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It uses a decimal point to separate the whole number part from the fractional part. For example, 0.5 is a decimal.

Front

How do you multiply a decimal by a whole number?

Back

To multiply a decimal by a whole number, multiply as if there are no decimals, 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 2.1 and 4.5?

Back

9.45

Front

What is 0.7 multiplied by 0.5?

Back

0.35

Front

What is 3.6 multiplied by 0.1?

Back

0.36

Front

What is 3.1 multiplied by 6?

Back

18.6

Front

What is 0.03 multiplied by 0.9?

Back

0.027

Front

How do you determine the number of decimal places in the product of two decimals?

Back

Count the total number of decimal places in both decimals being multiplied. The product will have that many decimal places.

Front

What happens to the decimal point when multiplying two decimals?

Back

The decimal point in the product is placed to the left, based on the total number of decimal places in the factors.