Multiply and Divide Decimals

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.

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers. Then, count the total number of decimal places in both numbers and place the decimal point in the product accordingly.

Front

What is the rule for dividing decimals?

Back

To divide decimals, move the decimal point in the divisor (the number you are dividing by) to the right until it becomes a whole number. Move the decimal point in the dividend (the number being divided) the same number of places to the right.

Front

Calculate 7.8 ÷ 0.03

Back

260

Front

Calculate 0.6 ÷ 5

Back

0.12

Front

Calculate 5.75 ÷ 0.25

Back

23

Front

What is the average speed formula?

Back

Average speed = Total distance ÷ Total time.

Front

If Mr. Williams ran 13.2 miles in 1.6 hours, what was his average speed?

Back

8.25 mph

Front

To divide 19.5 ÷ 0.31, where do you move the decimal?

Back

Right two places.

Front

What is the first step in multiplying decimals?

Back

Multiply the numbers as if they were whole numbers.