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Rational Number Arithmetic

Last updated over 4 years ago

13 questions

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Question 1

1.

Select all the true statements.

2.3  + (-2.3) is equal to zero

(-3.7) + (-4.1) is positive

Question 2

2.

The difference in height between the pelican and the heron is -33 feet.

Question 3

3.

Let x=

Question 4

4.

Let x= -11/8 and y= -11/4 WHich expression has a negative value?

x + y

x - y

Question 5

5.

The table shows transactions from five different bank accounts. Fill in the missing number for account 2.

Question 6

6.

The table shows transactions from five different bank accounts. Fill in the missing number for account 3.

Question 7

7.

The table shows transactions from five different bank accounts. Fill in the missing number for account 4.

Question 8

8.

The table shows transactions from five different bank accounts. Explain what each of the numbers -10, -20, and -30 tells you about Account 5.

Question 9

9.

Jada walks up to a tank of water that can hold up to 10 gallons. When it is active, a drain empties water from the tank at a constant rate. When Jada first sees the tank, it contains 7 gallons of water. Three minutes later, the tank contains 5 gallons of water. At what rate is the amount of water in the tank changing? Use a signed number, and include the unit of measurement in your answer.

Question 10

10.

Jada walks up to a tank of water that can hold up to 10 gallons. When it is active, a drain empties water from the tank at a constant rate. When Jada first sees the tank, it contains 7 gallons of water. Three minutes later, the tank contains 5 gallons of water. How many more minutes will it take for the tank to drain completely? Explain or show your reasoning.

Question 11

11.

Jada walks up to a tank of water that can hold up to 10 gallons. When it is active, a drain empties water from the tank at a constant rate. When Jada first sees the tank, it contains 7 gallons of water. Three minutes later, the tank contains 5 gallons of water. How many minutes before Jada arrived was the water tank completely full? Explain or show your reasoning.

Question 12

12.

Evaluate:

Question 13

13.

Evaluate:

-2.6 - (- 12/4) is positive

5/2 + (-2.5) is negative

72 - (-100) is negative

A heron is perched in a tree 50 feet above sea level. Directly below the heron, a pelican is flying 17 feet above sea level. Directly below the birds is a trout, swimming 23 feet below sea level. Select all the true statements. 

The difference in height between the pelican and the heron is 33 feet.

The distance between the heights of the pelican and heron is -33 feet.

The difference in height between the pelican and the trout is -40 feet.

The difference in height between the pelican and the trout is 40 feet.

The distance between the heights of the pelican and the trout is 40 feet