MT_HW_5_L5

Instructions

Lesson 1-5: Add and Subtract Rational Numbers.

A shark began at 172.5 meters below sea level and then swam up 137.1 meters. 

Where is the shark's location now in relation to sea level?

1

If the shark starts at 172.5 meters below sea level and swims up 137.1 meters, where is it in relation to the sea level now?

When Tom simplified the expression
-2.6 + (-5.4), he got 2.8. 

What mistake did Tom likely make?

1

What is the correct sum of -2.6 and -5.4?

The temperature in a town is 36.6°F during the day and -12.6°F at night. 

What is the temperature change from day to night?

1

If it was 36.6°F during the day and -12.6°F at night, what was the temperature change?

At the beginning of the day, the stock market goes up 30 1/2, points. At the end of the day, the stock market goes down 120¼ points. 

What is the total change in the stock market from the beginning of the day to the end of the day?

1

The stock market starts at 30 1/2 points. At the end of the day, the stock market goes down 120¼ points. What is the total change in the stock market?

A dolphin is swimming 18 feet below the surface of the ocean. There is a coast guard helicopter 75.5 feet above the surface of the water that is directly above the dolphin. 

What is the distance between the dolphin and the helicopter?

1

What is the total distance from the dolphin to the helicopter?

A scuba diving instructor takes a group of students to a depth of 54.96 feet. Then they ascend 22.38 feet to see some fish. 

Where are the fish in relation to the surface?

1

The diver is at a depth of 54.96 feet, he goes up 22.38 feet to observe a fish. How far is he from the surface?

1

If the shark starts at 172.5 meters below sea level and swims up 137.1 meters, where is it in relation to the sea level now?

What is the correct sum of -2.6 and -5.4?

If it was 36.6°F during the day and -12.6°F at night, what was the temperature change?

The stock market starts at 30 1/2 points. At the end of the day, the stock market goes down 120¼ points. What is the total change in the stock market?

What is the total distance from the dolphin to the helicopter?

The diver is at a depth of 54.96 feet, he goes up 22.38 feet to observe a fish. How far is he from the surface?

Simplify the expression: $-13.2 + 8.1$