Unit 1 Review

What is the absolute value of -77?

• 77

• -77

What is the absolute value of 87?

• -87

• 87

What is the additive inverse of 87?

• -87

• 87

• -13

• 13

What does additive inverse mean? Choose ALL that are correct.

• The number itself

• The number needed to make zero when you add

• A number's distance from zero

• The opposite of a number

What does absolute value mean? Choose ALL that are correct.

• The number itself

• The number needed to make zero when you add

• A number's distance from zero

• The opposite of a number

#30) The water level is Mr. Jacob's pond was -4 feet. After a drought, the water level dropped by 13 feet. What is the water level after the drought?

• -17 ft

• 17 ft

• 9 ft

• -9 ft

#32) Mount Everest is 29,028 feet above sea level. The bottom of the Mariana Trench is 36,070 feet below sea level. What is the difference between these two elevations?

• 65,098 ft

• -65,098 ft

• 7,042 ft

• -7,042 ft

#46) Mary's bank account was overdrawn by $21. If she deposits $60, what is the new balance?

• -$39

• $39

• -$81

• $81

5 - (-9) =

• -4
• -9
• 4
• 14