Directed Number

Overnight, the temperature dropped from 6 ºC to -15 ºC.

By how many degrees did the temperature fall?

One day the level of the water in a river was 25 cm above its average level.

One week later it was 10 cm below its average level.

How far did the water level drop in the week?

When multiplying integers that have the same sign, what will your answer be?

• Positive

• Negative

• Depends on the numbers

• It will have the sign of the biggest number

When adding integers, if the signs are different, the answer sign is

• Positive

• Negative

• The sign that comes first

• The sign of the number with the largest absolute value

Evaluate: -31 + (-19) =

• 50

• 12

• -12

• -50

-12 - (-15)

• 27

• 3

• -3

• -27

When you add integers, if the signs are the same, the answer will be

• Positive

• Negative

• the same sign as the numbers (the addends)

• the opposite sign

What is (-3)(-4)(-5)?

• 60

• 12

• -12

• -60

In a card game, Jonathon had 25 points and Joel had -6 points. What's the difference between their scores?

• 31

• 21

• 19

• -31

Marvin’s credit card statement showed that he owed $450. He made a payment of $300, then he charged $43 for gasoline. He returned a pants he had charged earlier for a refund of $45. Then he charged $35 at the bookstore. What is his new balance?