Multiplying & Dividing Rational Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

How do you multiply two decimal numbers?

Back

To multiply two decimal numbers, multiply them 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 product of 22.2 and 0.44?

Back

The product is 9.768.

Front

How do you convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, add the numerator, and place the result over the original denominator.

Front

What is 1½ multiplied by 3½?

Back

The product is 5¼.

Front

How do you find the total cost of multiple items?

Back

Multiply the cost of one item by the number of items purchased.

Front

If Michael bought 12 pencils at $0.35 each, how much did he spend?

Back

He spent $4.20.

Front

How do you divide a decimal by a decimal?

Back

Convert both decimals to whole numbers by multiplying by 10 for each decimal place, then divide as you would with whole numbers.

Front

What is 7.8 divided by 0.03?

Back

The quotient is 260.

Front

How do you share costs among multiple people?

Back

Divide the total cost by the number of people sharing the cost.