Adding Positive and Negative Numbers

1 + (-2)

4 + (-9)

1 + (-9)

(-9) + (-4)

The left side of this number line is:

• Positive.

• Negative.

• Neither positive nor negative.

Last month, Lisa's bank statement said that she had money in her account. Her bank balance was $109.32.

This month, Lisa's bank balance is -$87.12. What does this mean?

• Lisa overdrew her account by $87.12.

• Lisa has $87.12 in her account.

A little while ago, a dolphin was swimming below sea level at -7 meters.

Now the dolphin is jumping at 0.5 meters. What does this mean?

• The dolphin is 0.5 meters below sea level.

• The dolphin is 0.5 meters above sea level.

Put the following numbers in order from smallest to largest.
6, -2, -8, 8, 2
Choose the correct answer.

• 8,-8, 2, -2, 6

• -8,-2, 2, 6, 8

• 8, 6, 2, -2, -8

• 8, -8, 6, 2, -2

what is the opposite of the opposite of 3

• -3

• 3

• Don't know

• answer

• -(-3)

Which number is SMALLER?

9 or -9

• 9

• -9

• Neither