Multiplying on the TEAS test

Question

What is the product of 0.7 and 0.6?

A.) 4.2

B.) 0.42

C.) 0.042

D.) 0.0042

Answer 1

To save time, for problems such as this, multiply the numbers is not needed. Instead, use the fact that when multiplying numbers with decimals, the answer contains the same number or decimal places after the zero as the sum of the decimal places in the numbers being added together.

In this case, there are a sum total of two decimal places after the zero. Therefore, the answer has to have two decimal places after the zero. The only one that has this is B. Therefore, this is the correct answer.