Multiply and Divide 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

What is the product of 3.57 and 4.6?

Back

16.422

Front

How do you calculate the cost of fabric if you buy 2.5 meters at $6.20 per meter?

Back

You multiply 2.5 by 6.20 to get $15.50.

Front

How would you classify the number 5/9?

Back

Rational number.

Front

What is 1/4 divided by 2?

Back

1/8

Front

What is the product of 1/2 and 4/5?

Back

2/5

Front

What is the first step in multiplying decimal numbers?

Back

Align the numbers by the decimal point and ignore the decimal for the multiplication.

Front

What do you do with the decimal point after multiplying decimal numbers?

Back

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 fractions?

Back

To divide fractions, multiply by the reciprocal of the divisor.

Front

What is the reciprocal of 3/4?

Back

4/3.