How to subtract integers

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PSAT Math › How to subtract integers

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1

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?

6,000

CORRECT

6

0

17,000

0

17

0

3,000

0

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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