PSAT Math : How to subtract integers

Study concepts, example questions & explanations for PSAT Math

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Example Questions

Example Question #1 : Operations

The annual number of cellular phones purchased from a company is illustrated in the following graph. How many more phones were sold in 2009 than 2011?

Possible Answers:

6

17,000

3,000

17

6,000

Correct answer:

6,000

Explanation:

In 2009, 32,000 phones were sold (according the the label on the y-axis, each number is equal to 1,000 phones). In 2011, 26,000 phones were sold.

\small 32,000-26,000=6,000

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