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Biblioteka

W1 OL Extra Practice - Integer Word Problems and Multiplying & Dividing Integers

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Posljednje ažuriranje over 2 years ago
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The first half of this is practice over integer word problems (adding/subtracting) and the second half is over multiplication/division.

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So, in summary, there are really two steps:

  1. Multiply and divide focusing only on the numbers, ignoring the signs.

  2. If both signs in the problem are the same the answer is positive. If the signs are different the answer is negative.

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Use this information for the following 3 problems:

Evaluate each expression if x= -2, y=1, and z=5.

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Pitanje 1
1.

A fish was swimming 8 feet below sea level. It ascended 3 feet. Where is it now?

Pitanje 2
2.

A fish was swimming 8 feet below sea level. It descended 3 feet. Where is it now?

Pitanje 3
3.

A penguin was standing on a cliff, 15 feet above sea level. It jumped and dove to a spot that is 20 feet below sea level. Find the difference between its starting and stopping elevations.

Pitanje 4
4.

A penguin was standing on a cliff, 15 feet above sea level. It jumped and dove 20 feet. Where is it now?

Pitanje 5
5.

A submarine was located 300 feet below sea level. If it ascends 100 feet, what integer describes its new location?

Pitanje 6
6.

A submarine was located 300 feet below sea level. If it descends 100 feet, what integer describes its new location?

Pitanje 7
7.

A submarine was located 300 feet below sea level. It ascended until it was 100 feet below sea level. What is the vertical distance between its old and new location?

Pitanje 8
8.

Elena owed the bank $50. She paid off $20. What is her account balance now?

Pitanje 9
9.

Elena owed the bank $50. She deposited enough money to pay back what she owes, and now she even has $20 leftover in her account. How much money did she deposit?

Pitanje 10
10.

Erik and Andy were playing a video game. Erik's score was 5 points. Andy's score was 20 points lower than that. What was Andy's score?

Pitanje 11
11.

Erik and Andy were playing a video game. Erik's score was 5 points. Andy's score was -20 points. What is the difference in their scores?

Last week we added and subtracted integers. Take a second to review the rules above.

This week we will multiply and divide integers.

Watch this video to understand how we multiply and divide. (I would take a couple of notes if I were you. :)

**Note: He uses the word "minus" interchangeably for "negative." Don't let that confuse you.

Pitanje 12
12.

Drag the problem to the correct solution. Will its answer be positive or negative?

  • -4 x 7 =

  • -1 x 12 =

  • -6 x -3 =

  • -20 / -5 =

  • -18 / 3 =

  • 36 / 12 =

  • Positive Result

  • Negative Result

Pitanje 13
13.

Match the problem with the correct answer.

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

-9 x -3 =

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12

-9 x 3 =

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-12

1 x 7 =

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10

-1 x 7 =

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-10

-4 x -3 =

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-7

-5 x 2 =

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7

-5 x -2 =

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-27

4 x -3 =

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27

Pitanje 14
14.

-7(-2)

Pitanje 15
15.

-7(-2)(-1)

Pitanje 16
16.

8(-3)

Pitanje 17
17.

8(-3)(-2)

Pitanje 18
18.

-9/(-3)

Pitanje 19
19.

-9/3

Pitanje 20
20.

z / -5 =

Pitanje 21
21.

xy =

(hint: when variables are touching with no operation in between, you multiply.)

Pitanje 22
22.

x3 =

Pitanje 23
23.

The average 1st grader loses 3 teeth per year. In a 1st grade class of 30 students, what will the change in number of teeth be?

Pitanje 24
24.

Felix reported that the coldest day on record for his town was five times colder than yesterday's temperature, -4 degrees celsius. What was the temperature of the coldest day on record in Felix's town?

Pitanje 25
25.

Due to COVID, the movie theater reported losses of $475 each day for 3 days. What was the effect for the three days?

Pitanje 26
26.

Samantha has lost 2 pairs of earbuds every month beginning in March through the end of August. What has been the impact on her earbud collection?

Pitanje 27
27.

Select All that would have a negative product or quotient.

Pitanje 28
28.

If the dividend is negative and the divisor is postive; the quotient will be negative.

Pitanje 29
29.

The product of two negative integers will be a negative number.