Multiplying and Dividing 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 is a whole number. Move the decimal point in the dividend (the number being divided) the same number of places to the right, then divide as usual.

Front

What is the value of 72 ÷ 0.09?

Back

800

Front

If Martin’s car used 7.2 gallons of gas to drive 129.6 miles, how many miles did his car travel per gallon?

Back

18 miles per gallon.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator (top number) by the denominator (bottom number).

Front

What is 3/4 of a bag that weighs 5.8 ounces?

Back

4.35 ounces.

Front

If Jackie rode her bike around a park trail that is 8.54 miles long 4 times, how many miles did she travel in total?

Back

34.16 miles.

Front

What is the product of 10.5 and 0.36?

Back

3.78

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting the number to a nearby value that is simpler or easier to work with, often to a specified number of decimal places.