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.
Question 2
2.
Find the sum.
_______
Question 3
3.
Question 4
4.
Draggable item
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Corresponding Item
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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?_______
Question 6
6.
Find
−7−(−6).
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.
Question 8
8.
Find the sum.
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.
Question 10
10.
Question 11
11.
Question is on the background.
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?
Question 13
13.
Question 14
14.
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?
Question 16
16.
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?
Question 18
18.
Question 19
19.
Will the sign of the product of two negative numbers be negative or positive? Explain your answer.
Cannot tell; the sign depends on the absolute values of the factors.
Negative; if either of the factors is negative, their product is negative.
Negative; if the signs of the two factors are the same, their product is negative.
Positive; if the signs of the two factors are the same, their product is positive.
What is the diver's present depth?
-98 feet below the surface
72 feet below the surface
98 feet below the surface
-72 feet below the surface
Match the situation in Column A with its addition expression in Column B.
The temperature drops 12 degrees then rises 12 degrees.
A fish swims 12 feet below sea level and then another 12ft deeper to avoid a shark.
Pat takes 12 steps forward and then 12 steps back.
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?
0.49
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.
|–13 + (–4)|
|–13 – (–4)|
|–13 – 4|
|–4 + (–13)|
|–4 – (–13)|
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?