Positive and Negative Number Models

Summer temperature in Moscow, is 19 degrees. In winter the average is -8. What is the difference between the temperatures?    

• 11
• -11
• 27
• -27

Which number is SMALLER?

-12 or -11

• -12

• -11

• Neither

Numbers increase as you go left on the number line. True or False?

• True

• False

• Sometimes

• I have no idea

Find the sum.
-4 + 3

• -1
• 7
• 1
• -7

-9 + (-7)=

• 16
• 2
• -2
• -16

50 + (-8)=

• -42
• 58
• -58
• 42

Will the sum of 8 + (-9) be positive or negative?

• positive
• negative

-9 + (-5)

• -14
• 14
• -4

28 + (-30)

• -2
• 2
• 58
• -58

After a drop in temperature of 3 degrees, the temperature is -12, what was the temperature to start with?

• -10
• -9
• -15
• -36