MATH 811  NOTES ABOUT HOMEWORK, ANNOUNCEMENTS, ETC.

 

Assigned:

Be sure to do some odd problems first and check the back of the book!

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You may also not see current pages if your computer does not have an up-to date browser… download a new version or use a library/lab computer.

I see how far we get in lecture before I come up with a homework assignment, and will generally post that new assignment by 1pm the day of lecture!

F 08/21

Due Monday:

1.2 p13 #14, 24, 26

1.3 p20 #8, 16, 28, 30, 46

 

M 08/24

Due Weds. 8/26:

1.4 p27 # 8, 16, 24

1.5 p 37 # 20, 22, 30

 

Quiz Weds. on multiplication tables from 1x1 up to 10x10.

 

W 08/26

Due Fri 8/28

1.6 p48 # 32, 38, 42, 52, 60

 

Quiz Fri. on hmk assigned F08/21 as above

 

F 08/28

Due Mon 8/31

1.6 p48 # 74

1.7 p56 #8, 16, 28, 32, 55

 

Quiz Mon. on hmk assigned M 08/24 as above

 

M 08/31

Due Weds 09/02

1.9 p81 #22, 28, 34, 44, 52

 

Quiz on Weds on hmk assigned W 08/26

 

W 09/02

Due Fri 09/04

2.1 #52, 56, 60, 68, 76

 

Quiz on Fri on hmk assigned F 08/28

 

F 09/04

Due Wed 09/09

2.3 p110 #14

2.3 p113 #46, 54, 58, 62

2.5 p127 #16, 38

 

No Quiz on Weds.09/09

(No class on Monday 09/07 due to Labor Day Holiday)

 

W 09/09

We continued working on using primes to factor, reduce fractions and multiply and divide fractions. Next time, we will move on to look at using primes to find LCDs (least common denominators) to help in adding and subtracting fractions.

Here are some problems to practice multiplying and dividing (not to turn in, but to use as a guide to the use of primes):

1. (12/77)*(35/60)   Answer: (2*2*3)/(7*11)  *  (5*7)/(2*2*3*5) = 1/11

2. (9/210)*(175/15) Answer: (3*3)/(2*3*5*7)  *  (5*5*7)/(3*5)  = 1/2

3. (16/45)*(315/24) Answer: (2*2*2*2)/(3*3*5)  *  (3*3*5*7)/(2*2*2*3)  = 14/3

4. (24/16) divided by (315/15) Answer: (2*2*2*3)/(2*2*2*2)  *  (3*5)/(3*3*5*7) =1/14      (Remember that you turn division into multiplication by flipping the 2nd fraction).

 

TURN IN (due Friday):

1. (60/350)*(20/105)  

2. (63/49)*(294/12)

3. (108/63) divided by (150/196)  

4. (210/231) divided by (462/420)  

5. (630/2310) divided by (1925/180)  

 

Quiz on finding primes (as in 2.1) next time!

 

F 09/11

Homework due Mon 9/14

3.1 p156 # 6, 10, 14, 18, 20

 

Quiz on hmk from F 9/4 on Monday

 

M 09/14

Homework due Weds 9/16

3.2 p162 # 4, 10, 16, 20, 36

 

Quiz on hmk assigned 9/9  next time

 

W 09/16

Homework due Friday 9/18

3.4 p177 # 10, 14, 26, 38, 50

 

Quiz Friday on hmk assigned on 9/11

 

NOTE: I stated in the syllabus and in class several times that electronic devices are not to even be touched in the classroom while class is in session. Still, instances occur each session (I have observed such use each session whether I have mentioned it or not!). It does not matter if you are just checking your messages, your actions will be perceived as cheating. From here to the end of the semester, I will not provide any more warnings. The class is being put on notice that any future instances of touching electronic devices in class will result in the student being asked to leave the class for the remainder of the session. Forced dismissal from class will affect your absence totals and can result in your being dropped from the class for the semester.

 

You will have your first test on Monday 9/21 as scheduled.

To help you prepare, there is a practice test below that is of the same form as the one you will take on Monday. Find a quiet place to take the test for 50 minutes or less and then check your answers with those I provided below. To pass the test, you must have at least 7 out of 10 completely correct. If you do not pass the test, you will be assigned more tutoring hours that you will have to complete to earn another chance to take it. Make your attempts count! Come with questions on Friday if you have them. Note that the division symbol does not read well here, so on one problem I used % to indicate division. On another, I wrote out “divided by”. The traditional division symbol with a horizontal line and two dots will be used on the actual test. Multiplication is indicated here with either X or * but one dot may be used on the test instead. (This is not an assignment to turn in).

 

 

UNIT 1 TEST Name___________________________________________

The exact answer must be placed in the space provided, but you must also submit appropriate work to go with each problem on the scratch paper provided.

All answers must be simplified completely.

 

1.     5,003

     - 3,665                                                             Answer#1:______________

 

2.    4503

     X  310                                                                Answer#2:______________

 

 

3.  31542 divided by 32                                      Answer#3:______________

    (any remainders must be written

     after “R” and included in answer)

 

4.  Solve  8 · x =816                                           Answer#4:______________

 

 

 

5.  190-100 % 10 * 5 + 4                                    Answer#5:______________

     (% used here means division, not percent

      due to unavailability of typing symbols)

 

6. What part of an inch is shown?                        Answer#6:______________

     (Use the scale drawn—the Y

     is supposed to mark the spot!)

    I  I  I  I  I  I  I  I  I  I  Y  I  I  I  I  I  I  I

      0                                                 1

 

7. Reduce completely  900/840                          Answer#7:_______________

   (show all prime factors before cancelling)             

                              

   

8. Divide (show all primes before cancelling)       Answer#8:_______________

    (16/54) divided by (40/45)

                                               

                  

9. Find the LCM of 84 and 90                              Answer#9:_______________

    (show use of primes in your work)

 

                                                           

10.  (3/18) + (7/12)                                            Answer#10:_______________

 

 

 

ANSWERS: Work on the sections some more for the ones you missed!

 

 1.  1338           (see section 1.3)

 2.  1,395,930   (see section 1.5)

 3.  985 R 22     (see section 1.6)

 4.  102             (see section 1.7)

 5.  144               (see section 1.9)

 6.  10/17          (see section 2.3)

 7.  15/14          (see section 2.5)

 8.  1/3              (see section 2.6 and extra problems assigned on 9/9)

 9.  1260            (see section 3.1)

10. 3/4              (see section 3.2)

 

 

F 9/18

Homework is to study for your test!

 

M 9/21

I will have your tests back for you on Weds.  No new hmk. assignment.

 

W 9/23

We went back to a previous section to try some word problems. They use the solving techniques from section 1.7.

 

Homework due Fri 9/25

1.8 p68 # 2, 6, 14, 18, 20, 26, 36

 

Quiz on mixed numbers

 

F 9/25

We will do some more word problems later, but for right now, we will continue with ch. 3.

Homework due Monday 9/28

3.5 p185 # 14, 18, 22, 28, 36

 

Quiz on area and perimeter next time.

 

M 9/28

Homework due Weds 9/30

3.5 p186 # 42, 46, 50, 54

3.3 p171 # 60, 64

 

 

W 9/30

Homework due Fri 10/02

3.6 p196 # 4, 6, 10, 16, 18

 

 

F 10/02

Homework due Weds. 10/07

P29 # 52, 58, 60 and do the same with the fractions 12/63 and 8/27

P82 # 56, 58

 

The second attempt at the Unit 1 test is on Monday. If you passed the first attempt with 7/10 or better, you do not need to come to class on Monday, although you are welcome to come if you just want to take the test again for practice. If you did not pass the first attempt, you must have completed your assigned tutoring hours by today to qualify. Otherwise, you will not be allowed to take the test.

 

W 10/07

Homework due Fri 10/09

3.7 p205 # 6, 10, 12, 14, 16

 

F 10/09

Homework due Mon

4.1 p225 # 14, 18, 22, 26, 30, 34, 42

 

M 10/12

Homework due Weds

4.2 p233 # 10, 16, 24, 34, 44, 52

 

W 10/14

Homework due Fri

4.3 p241# 6, 18, 24, 26, 40

 

F 10/16

Homework due Mon

4.4 p251 # 6, 16, 18, 28, 34

 

M 10/19

Homework due Weds

4.5 p260 # 16, 26, 32, 34, 36

 

The first attempt at the Unit 2 test is scheduled for Monday 10/26. I will put up a practice test here on Weds.

 

W 10/21

Homework due Fri

4.5 p261 #54 (all parts)

4.7 p279 # 8, 16

Unit 2 practice test will be here by this afternoon…please check back!

 

Unit 2 Practice Test (due to compatibility and readability problems, some operations such as division are written out and mixed numbers are as follows:

when you see 7 1/2 that means the mixed number “seven and one-half”)

 

  1. Solve the word problem (simplify completely and write answer as a reduced fraction) :

A server has a bowl containing 11/12 cup of grated cheese and puts 1/8 cup on a customer’s meal. How much remains in the bowl?

 

  1. Solve the word problem (simplify completely and write answer as mixed number):

Tara is 66 inches tall and her son, Tom, is 59 7/12 inches tall. How much taller is Tara?

 

  1. Subtract (write final answer as mixed number):

8 1/5 – 3 4/7

 

  1. Divide (write final answer as mixed number):

32 divided by 5 1/2

 

  1. Simplify completely :

(3/4)squared + 3 1/2 divided by 1 1/4

 

  1. Both of the following must be done correctly for credit to be awarded on this problem:

 

    1. Write fraction notation (do not write a mixed number and do not reduce the fraction):

27.008

 

    1. Write decimal notation:

8,953,074/1,000,000

 

  1. Subtract (write final answer as a decimal):

5.7 – 5.079

 

  1. Multiply (write final answer as a decimal):

9.28 times 8.6

 

  1. Divide (write final answer as a decimal):

12 divided by 0.64

 

  1. Find decimal notation for the fraction:

4/15

 

Answers: (you are responsible for the types of problems in each range below)

1. 19/24 (see section 3.3 #57-64)

2. 6 5/12 (see section 3.5 #37-56)

3. 4 22/35 (section 3.5 #1-36))

4. 5 9/11 (section 3.6 #13-24)

5. 3 29/80 (section 3.7 #1-18)

6. a. 27008/1000   b. 8.953074  (section 4.1 #11-42)

7. 0.621 (section 4.2 #1-48)

8. 79.808 (section 4.3 #1-48)

9. 18.75 (section 4.4 #1-36)

10. 0.26 with a bar over the 6 (section 4.5 #1-36)

 

F 10/23

Homework is to study for your test as above. All may take this 1st attempt at the Unit 2 test without preconditions involving tutoring. However, if you do not come to try the test, you will automatically be assigned 4 hrs. in 18-202 to earn a 2nd attempt!

 

M 10/26

No new assignment

 

W 10/28

Homework 5.3 p311 # 14, 18, 30, 42, 44

 

F 10/30

Homework due mon

5.4 p320 # 4, 14, 18, 24

5.5 p329 # 10

 

M 11/02

Homework due Weds

5.5 p330 # 16

6.1 p346 # 16, 20, 28, 42, 48, 50

 

W 11/04

Homework due Friday

6.2 p354 # 6, 12, 16, 20, 28

 

F 11/06

The 2nd attempt at the Unit 2 test is on Monday 11/09. If you passed this test on the 1st attempt, you do not need to come to class on Monday. Then, due to Veteran’s Day and Flex Days, we will not meet again until  Monday 11/16. Homework assigned today will be due on 11/16.

 

Homework due Monday 11/16

6.2 p355 # 40, 44, 48, 52, 60

 

M 11/16

Homework due Weds 11/18

6.3 p363 # 10, 12, 14, 18, 22

 

F 11/20

Please be ready to finish Unit 2 by Mon 11/30 if you haven’t passed it already.

Make an appt. to do it outside of class with me in my office.

We started a new chapter today. Please read the section and try:

Homework due Mon 11/23

10.2 p594 # 18, 30, 34

10.3 p599 # 22, 30

 

M 11/30

Work on 10.5 p613 #51-82 for yourself (will not be collected)

 

W 12/02

We finished up the material for the Unit 3 test from sections 6.6, 9.2, 11.4. Please come Friday 12/04 for review and then you may take the test on Monday 12/07 and dispose of your obligation this semester! If you do not take it on Monday 12/07, you will have another opportunity on Friday 12/11. Your third and last chance will be during finals week on Weds. 12/16 in our usual room from 9:10-10:00. You must pass this test to receive credit for the course.

 

Unit 3 test format (Some of the items are from a common final that the math dept insists on, so we talked about them today. Do some problems from each section for practice):

 

 1. It is required by the dept that you know the difference between a “greatest common factor” or GCF, and a “least common multiple” or LCM. Even though the book does not officially treat the GCF, we talked about it when we went over the LCM in section 3.1.

Example: p156 #13 Find the LCM and GCF of 18 and 24.

Answer: 18=2*3*3 and 24=2*2*2*3

so LCM=2*2*2*3*3=72 and GCF=2*3=6

 

 2. section 5.5 p329 like #9-16

 

 3. section 6.1 p346 like #35-54

 

 4. section 6.2 p354 like #37-60

 

 5. section 6.3 p363 like #7-34

 

 6. section 6.3 p363 like #7-34

 

 7. section 6.6 p390 like #1-6

 

 8. it is required by the dept that you demonstrate knowledge of perimeter and area with respect to triangles. We looked at these with respect to rectangles, but the triangles are in section 9.1p519 and 9.2 p527 (the formula for area is at the bottom of p523). We talked about these today.

Example: suppose a triangle that looks like the one in example 7 on p524 has a bottom of size 50, a left side of size 30, a right side of size 40, and a height of size 24. Find the perimeter and area of the triangle.

Answer: perimeter=30+40+50=120 and area=(1/2)(50)(24)=600

 

 9. section 10.2 p594 like #1-30, 10.3 p599 like #1-36, 10.4 p604 like #1-22

Example: simplify each (all must be correct)     a. -5(-4)  b. -5-(-4)  c. -5-4

Answer:   a. +20   b. -1  c. -9

 

10. section 11.4 p647 like #1-16

 

F 12/04

Went over the test problems today. All that’s left is for you to come take the test on Monday and be done!