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

MT_HW_5_L5

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: $-13.2 + 8.1$

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: $-13.2 + 8.1$