Will the sign of the product of two negative numbers be negative or positive? Explain your answer.
Suppose a deep sea diver dives from the surface to
85
feet below the surface. He then dives down
13
more feet. The diver's depth is represented by the sum
−85+(−13).
Find and interpret the sum to describe the diver's present depth.
1 point
1
Question 2
2.
Find the sum.
_______
1 point
1
Question 3
3.
What is the diver's present depth?
3 points
3
Question 4
4.
Match the situation in Column A with its addition expression in Column B.
Draggable item
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Corresponding Item
A fish swims 12 feet below sea level and then another 12ft deeper to avoid a shark.
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Pat takes 12 steps forward and then 12 steps back.
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The temperature drops 12 degrees then rises 12 degrees.
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2 points
2
Question 5
5.
Walking Mario walks 7 blocks east from his home and arrives at his favorite restaurant. When he arrives, he discovers that he dropped his wallet along the way. He retraces his steps for 5 blocks until he finds his wallet. An expression for how many blocks east Mario is from his home after finding his wallet is the sum
7+(−5).
How many blocks east is Mario from his home after finding his wallet?_______
2 points
2
Question 6
6.
Find
−7−(−6).
2 points
2
Question 7
7.
The temperature at the beginning of the day was −4°C. The temperature dropped 5°C
by the end of the day. What was the temperature at the end of the day? Use the number line model to find −4−5.
2 points
2
Question 8
8.
Find the sum.
2 points
2
Question 9
9.
Write the integer that represents the situation. The temperature was11°F. It dropped so that the temperature was 0°F. _______ °F was the change in temperature.
2 points
2
Question 10
10.
Four out of nine dogs weigh less than 20 pounds.
What is the decimal equivalent for the number of dogs weighing less than 20 pounds?
2 points
2
Question 11
11.
Question is on the background.
2 points
2
Question 12
12.
Javier had $305 in his bank account. His bank charges a fee of $7.50 each month that a balance is below $500. If he makes no other deposits or withdrawals, how much money is in Javier’s account at the end of three months?
2 points
2
Question 13
13.
A fish finder shows a large fish at 13 feet below the surface of the water and a smaller fish located 4 feet below the surface of the water. Select all the expressions that are equivalent to the distance between the fish.
2 points
2
Question 14
14.
A catering company loses $110 as a result of a delay. The 5 owners of the company must share the loss equally.
Which quotient represents each owner's share of the loss?
2 points
2
Question 15
15.
Carl and Cameron are at a pool. Carl dives in and touches the bottom of the pool, 15 feet below the surface of the water. Cameron is standing on a diving platform 2 feet above the surface, waiting for his turn.
What is the vertical distance between Carl’s hand and Cameron’s feet?
2 points
2
Question 16
16.
What is 27+(−3)+(−20)?
2 points
2
Question 17
17.
The high temperatures in Weston for 7 consecutive days were −14°C, −10° C, −3°C, 6°C, 8°C, −4°C, and −11°C. What was the average high temperature for the 7 days?