MULTIPLICATION: Problem 4

Rule 12: To multiply a whole number and a fraction, complete the following steps.

1.

Convert the whole number to a fraction. (See Rule 8)

2.

Multiply the numerators.

3.

Multiply the denominators.

4.

Reduce the results. (See Rule 10)
a.
Factor the product of the numerators.
b.
Factor the product of the denominators.
c.
Look for the fractions that have a value of 1.

Problem 4: Reduce .

Answer. The answer is .

Solution. Factor the numerator, factor the denominator, and locate the fraction(s) that has(have) a value of 1.

Although we have reduced the problem, it can be reduced further. Follow the same steps

You can check the answer with your calculator. If 72 divided by 90 yields the same answer as 4 divided by 5, is equivalent to .

[Previous Problem] [Next Problem] [Menu Back]

S.O.S MATHematics home page

Do you need more help? Please post your question on our S.O.S. Mathematics CyberBoard.

Author: Nancy Marcus