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Larson and Silbey - Mathematical Practices 1/e (Homework)

James Finch

Math - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 20 / 65

Due : Sunday, January 27, 2030 00:00 EST

Last Saved : n/a Saving...  ()

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Question
Points
1 2 3 4 5 6 7 8 9
4/4 4/4 1/1 –/14 2/2 9/9 –/3 –/20 –/8
Total
20/65 (30.8%)

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    In this assignment we present several textbook question types found in Mathematical Practices, Mathematics for Teachers: Activities, Models, and Real-Life Examples 1/e by Ron Larson and Robyn Silbey published by Cengage Learning.

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1. 4/4 points  |  Previous Answers LarMPMT1 3.1.015. My Notes
Question Part
Points
Submissions Used
1 2 3 4
1/1 1/1 1/1 1/1
1/50 1/50 1/50 1/50
Total
4/4
 
Draw and use a number line to find each sum.
(a)    
7 + 2

Correct: Your answer is correct.

(b)    
3 + 8

Correct: Your answer is correct.

(c)    
2 + 5 + 9

Correct: Your answer is correct.

(d)    
4 + 2 + 7

Correct: Your answer is correct.
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2. 4/4 points  |  Previous Answers LarMPMT1 3.1.018. My Notes
Question Part
Points
Submissions Used
1 2 3 4
1/1 1/1 1/1 1/1
1/50 1/50 1/50 2/50
Total
4/4
 
Consider the following.
Describe how to use the base-ten blocks to add two numbers.
Join all the blocks into a single group. Regroup Correct: Your answer is correct. ones into 1 ten and Correct: Your answer is correct. tens into 1 hundred.

Write the addition problem represented by the model.
     Correct: Your answer is correct.

Finally, solve the addition problem.
Correct: Your answer is correct.
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3. 1/1 points  |  Previous Answers LarMPMT1 3.1.026. My Notes
Question Part
Points
Submissions Used
1
1/1
1/50
Total
1/1
 
Find the total cost of both wedding bands using the expanded algorithm or the standard algorithm.
$ Correct: Your answer is correct.
$329
$1499
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4. –/14 points LarMPMT1 3.2.014. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5 6 7 8 9 10 11 12 13 14
–/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1
0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50
Total
–/14
 
(a) Consider the following.
WebAssign Plot
Describe how the number line model is used to subtract two numbers.
The arrow of 8 units represents the , and the arrow of 6 units represents the .

Write and solve the subtraction problem represented by the model.
− =

(b) Consider the following.
WebAssign Plot
Describe how the number line model is used to subtract two numbers.
The arrows of 3 units represent the .

Write and solve the subtraction problem represented by the model.
− =

(c) Consider the following.
WebAssign Plot
Describe how the number line model is used to subtract two numbers.
The arrow of 4 units represents the , and the arrow of 2 units represents the .

Write and solve the subtraction problem represented by the model.
− =
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5. 2/2 points  |  Previous Answers LarMPMT1 3.3.003. My Notes
Question Part
Points
Submissions Used
1 2
1/1 1/1
1/50 1/50
Total
2/2
 
Rewrite each expression as the product of two whole numbers.
(a)    
7 + 7 + 7
     Correct: Your answer is correct.

(b)    
8 + 8 + 8 + 8 + 8

     Correct: Your answer is correct.

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6. 9/9 points  |  Previous Answers LarMPMT1 3.3.016. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5 6 7 8 9
1/1 1/1 1/1 1/1 1/1 1/1 1/1 1/1 1/1
1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50
Total
9/9
 
Identify the numbers that are multiplied at each step in the expanded algorithm solution of each problem.
(a)    
36
×38
48        8 × 6
240         Correct: Your answer is correct.
180         Correct: Your answer is correct.
 + 900         Correct: Your answer is correct.
1368

(b)    
531
×49
9         Correct: Your answer is correct.
270         Correct: Your answer is correct.
4,500         Correct: Your answer is correct.
40         Correct: Your answer is correct.
1200         Correct: Your answer is correct.
 + 20,000         Correct: Your answer is correct.
26,019

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7. –/3 points LarMPMT1 3.3.035. My Notes
Question Part
Points
Submissions Used
1 2 3
–/1 –/1 –/1
0/50 0/50 0/50
Total
–/3
 
An ad in a local newspaper costs $39 per column inch. A column inch is a unit of space that is 1 column wide and 1 inch high as shown below.
(a) Find the cost of an ad that is 1 column wide and 4 inches high.
$

(b) Write an expression for the cost of an ad that is 3 columns wide and 4 inches high.
    

Find the cost of this ad.
$
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8. –/20 points LarMPMT1 5.2.008. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
–/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1
0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50
Total
–/20
 
List the natural numbers from 40 through 49 with their factors. Which of the numbers are prime?
Number Factors
(Enter your answers as a comma-separated list.) 		Conclusion
40
41
42
43
44
45
46
47
48
49

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9. –/8 points LarMPMT1 15.3.020. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5 6 7 8
–/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1
0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50
Total
–/8
 
Use the slope and y-intercept to sketch the graph of each equation.
(a)    
y = 2x + 3
No Solution
Help
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  • After you add an object to the graph you can use Graph Layers to view and edit its properties.

Identify the x-intercept.
x =

(b)    
y = − 
1
4
x
No Solution
Help
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Graph LayersToggle Open/Closed

  • After you add an object to the graph you can use Graph Layers to view and edit its properties.

Identify the x-intercept.
x =

(c)    
y = 
3
2
x − 6
No Solution
Help
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Clear Graph
Delete Layer
Fill

Graph LayersToggle Open/Closed

  • After you add an object to the graph you can use Graph Layers to view and edit its properties.

Identify the x-intercept.
x =

(d)    
y = −6x + 7
No Solution
Help
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Clear Graph
Delete Layer
Fill

Graph LayersToggle Open/Closed

  • After you add an object to the graph you can use Graph Layers to view and edit its properties.

Identify the x-intercept.
x =
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