MATH 811   NOTES ABOUT HOMEWORK, ANNOUNCEMENTS, ETC.

 

Assigned on:

After introducing examples of a new section, if I assign a range of problems from the current section for you to select work from, you should try the odds in that range, check the answers in back, go to tutoring, etc., and bring questions to class.

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I see how far we get in lecture before I come up with a homework assignment, and will generally post that new assignment by 12pm the day of lecture!

W 01/21

Read section 1.1 and 1.2 about the number system and addition. If you plan to take this course, get the book as soon as you can so you do not get left without one. Your first assignment will be on Friday!

 

F 01/23

We worked on more addition problems, some subtraction problems, and talked about how multiplication is repeated addition, so that you do not need to have a copy of the multiplication tables to refer to; you can easily recreate the products you need. For example, you can write the product as a sum, then add by pairs:

4*7=7+7+7+7=14+14=28

 

Homework due M 01/26:

1.2 p13 #20, 24

1.3 p20 #18, 28, 30, 40

(This is just what I want turned in. You should do more problems for yourself!)

 

M 01/26

We worked on multiplication using columns after going over the homework. Read thru section 1.4 and browse section 1.6 for next time and do the following:

 

Homework due W 01/28:

1.5 p37 # 4, 8, 18, 26, 36

(This is just what I want turned in. You should do more problems for yourself!)

 

Quiz on addition on Weds.

 

W 01/28

We worked on long division in section 1.6 after going over the homework.

 

Homework due F 01/30:

1.6 p48 # 32, 40, 46, 52, 60

(This is just what I want turned in. You should do more problems for yourself!)

 

Quiz on subtraction (section 1.3 on Fri.)

 

F 01/30

Did more long division, then went back to section 1.4 to pick up rounding skills. We will talk about solving of equations on Monday.

 

Homework due M 02/02:

1.4 p27 # 4, 16, 22

1.6 p50 # 72, 74

 

Quiz on multiplication on Monday

 

M 02/02

Went over the hmk, then talked about the first part of section 1.7.

 

Homework due W 02/04:

1.7 p56 # 8, 18, 28, 34, 52

 

Quiz on division on Weds. as in the work assigned from 1.6 on 01/28 above.

 

W 02/04

More from section 1.7 today, and we also started working on primes in preparation for chapter 2.

 

Homework due F 02/06:

1.7 p56 # 16, 24, 30, 46, 56

 

Quiz on work assigned on 01/30 above on Friday.

 

F 02/06

We will come back to section 1.9 next week, but for today, we worked on using tree diagrams to find prime factors. Read the section…it shows you how the trees can be made! Start loving the primes…they will save you later in your work with fractions.

 

Homework due M 02/09:

2.1 p96 # 48, 54, 60, 67, 76

 

Quiz on work assigned on 02/02 above on Monday.

 

M 02/09

We worked on understanding what a fraction means (in section 2.3) and using prime factors to reduce fractions (in section 2.5). In 2.5, be sure to show all prime factors before cancelling, as in ex. 6 on p124.

 

Homework due W 02/11:

2.3 p110 # 14, 24

2.5p127 # 10, 26, 40

 

Quiz on work assigned on 02/04 above on Wednesday.

 

 

W 02/11

WE DO NOT MEET ON FRIDAY 02/13 OR MONDAY 02/16… YOU HAVE THESE DAYS OFF FOR PRESIDENTS’ DAYS!!! ENJJOY!!!

 

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

 

Look at the examples in 2.6 starting on p129 then look at the following examples with larger numbers (since they do not include very interesting problems, I am giving you some more below!).

 

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) * (15/315) Answer: (2*2*2*3)/(2*2*2*2)  *  (3*5)/(3*3*5*7) =1/14     

 

TURN IN (due Wednesday 02/18):

Show all prime factors for each numerator (top of fraction) and denominator (bottom of fraction)

1. (28/105)*(15/12)

2. (60/350)*(20/105)  

3. (63/49)*(294/12)

4. (108/63) * (196/150)  

5. (210/231) * (420/462)  

 

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

 

W 02/18

TURN IN (due Friday 02/20):

We worked on division of fractions using primes (as in section 2.7, but with somewhat larger numbers). The nice part about division is that you can turn it into multiplication and then just do the same thing you did for the last homework! For instance,

(12/77) divided by (60/35) is the same as (12/77) multiplied by (35/60), so as above,  Answer: (2*2*3)/(7*11)  *  (5*7)/(2*2*3*5) = 1/11

 

Show all prime factors for each numerator (top of fraction) and denominator (bottom of fraction)

1. (5/6) divided by (5)

2. (360) divided by (8/7)

3. (8/9) divided by (70/15)

4. (12/14) divided by (6/98)

5. (9/30) divided by (6/20)  

 

Quiz on homework assigned on 02/09 (as in section 2.3/2.5) next time!

 

F 02/20

Homework due Monday:

1.9 p81 #24, 28, 30, 34, 38

Part of your homework also is to prepare for the Unit 1 Test, and to help you do so, try the practice test below in a quiet place for 50 minutes or less and then check your answers. Come with questions on Monday. (This is not to turn in).

UNIT 1 TEST Name___________________________________________

All answers must be simplified completely.

1.    41,234

       32,791

   +    4,165                                                           Answer:______________

2.     5,003

     - 3,665                                                             Answer:______________

3. Round to the nearest

     thousand:  39,950                                             Answer:______________

4.    4503

     X  310                                                                Answer:______________

5.   31542  32                                                     Answer:______________

6. Solve for x                                                          Answer_______________

     19 · x =6080

7. Solve for x                                                          Answer_______________

      9564 = 2435  + x

8. What part of an inch is shown?

     (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

                                                                               Answer_______________

9. Reduce completely (show all prime factors)

                                                                        Answer_______________

10. Multiply (show all prime factors then use them to cancel)

                               Answer_______________

 

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

 1.  78190   (see section 1.2)

 2.  1338     (see section 1.3)

 3.  40,000     (see section 1.4)

 4.  1,395,930     (see section 1.5)

 5.   985 R 22     (see section 1.6)

 6.   320     (see section 1.7)

 7.   7129     (see section 1.7)

 8.   10/17     (see section 2.3)

 9.  15/14     (see section 2.5)

10.  1/3    (see section 2.6 and extra problems assigned)

 

M 2/23

Homework is to study for Wednesday’s test as above.

 

W 02/25

I will pass your Unit 1 Tests back to you on Friday. No homework or quiz for Friday.

 

F 02/27

Homework due Monday

3.1 p156 # 4, 10, 18, 20, 42

 

M 03/02

Those who had 6 or fewer points on the Unit 1 test must perform tutoring hours in 18-202 to earn a 2nd chance at taking it. Originally, the 2nd attempt was scheduled for Weds. 3/11, but the school has cancelled classes that day. So you may take it on Friday 3/13 at 8:10-9:00, 10:10-11:00, or 11:10-12:00. Please tell me this week when you plan to take it. If none of those times works, let me know.

Tutoring hours required: 0-3 points must perform 4 hours , 4 points: 3 hours, 5 points: 2 hours, 6 points: 1 hour (7 or more points: none!).

Homework due Weds. 3/4 section 3.2 p162 # 4, 10, 16, 18, 20

 

W 03/04

Homework due Friday: 3.3p170 #6, 18, 22, 30, 34

If you are planning on scheduling a 2nd attempt at the Unit 1 test with me, you must set up a time as stated above in the previous day’s notes. Please do so by the end of this week by giving me a note or sending me an email.

 

F 03/06

Homework due Monday: 3.3 p170 #20, 32 and 3.4 p177 #12, 24, 40, 48

 

M 03/09

All classes on this campus are cancelled for Weds. 03/11. We will have class as usual on Friday 03/13. Anyone taking a second attempt at the first test is scheduling separately with me for that day (and performing tutoring hours before Friday as defined above in the notes and in class).

Homework due Friday: 3.5 p185 #6, 18, 22, 28, 36

 

F 03/13

We worked on section 3.6 today

Homework due Monday: 3.6 p196 # 2, 8, 14, 16, 20

 

M 03/16

In section 3.7, you must work according to correct order of operations as studied in section 1.9 p81, together with appropriate operations on fractions (LCD for addition and subtraction, no LCD for multiplication and division). This is not easy! Read the examples in the section first, then try some odds and check your answers, then try the homework below:

Homework due Weds: 3.7 p205 # 4, 6, 10, 12, 16

 

F 03/20

Homework due Monday: 4.1 p225 # 12, 18, 22, 30, 38

 

M 03/23

Homework due Weds. 4.2 p233 #4, 6, 16, 24, 48

Those who have not passed the Unit 1 test must finish their tutoring hours in 18-202 as in the syllabus and the notes from 03/02, and must take the test with me on Weds. 03/25 at 7am, 11am, or 12pm. Those who do not pass the test by then will be withdrawn from the course.

 

W 03/25

Homework due Friday 4.3 p241 #6, 12, 18, 28, 36

Note that your Unit 2 test will occur on Weds. 4/01 next week. It will be made of one question from each of the following sections:

 1. section 2.7 divide fractions (show primes)

 2. section 3.1 Find the LCM of two numbers (find from primes)                              

 3. section 3.2 Add and simplify fractions (show LCD from primes)  

 4. section 3.3 Subtract and simplify fractions (show LCD from primes)

 5. section 3.4 Convert to a mixed numeral                          

 6. section 3.5 Subtract and write as a mixed numeral                     

 7. section 3.6 Divide and write as a mixed numeral

 8. section 3.7 Simplify using correct order of operations                            

 9. section 4.1 Write fraction or decimal notation (not mixed #)

10. section 4.2 Subtract decimals

 

F 03/27

Homework due Monday 4.4 p251 #2, 6, 8, 14, 28

 

M 03/30

We went over the test format in class since I did not get in on Saturday to upload a practice test. Homework is to study for the test. See sections covered above!

Answer to the quiz: 4.087/1000 = 0.004087

 

W 04/01

Unit 2 test first attempt

 

F 04/03

Homework due Monday 4/13

4.4 p251 #16, 18, 26, 34 and 4.5 p260 #6, 29

Those who did not pass the Unit 2 Test might want to consider studying for it again over break, too!

HAVE A GREAT SPRING BREAK!!!!

 

M 04/13

Class cancelled

 

W 04/15

Remember that the 2nd attempt at the Unit 2 test will be in class on Weds. 04/22. If I assigned you tutoring hours in 18-202, you must log in there for the required number of hours and complete the assigned time before 04/22 to be eligible to take the test. Do not miss this opportunity! If you put it off thru inaction and wait until the 3rd attempt and you don’t pass that attempt, you will earn no credit for the course! Make sure you take advantage of the opportunity to get it done before the last minute and have one more chance if needed!

Homework due Friday

4.5 p260 # 12, 22, 30 and 5.2 p302 # 8, 10, 14, 20, 22

 

F 04/17

Those who were assigned tutoring hours must complete them before Weds. to be eligible to take the 2nd attempt of Unit 2 in class on Weds. Those who passed the 1st time will not need to come on Weds.

Homework due Monday

5.3 p311 #18, 24, 30 and 5.4 p320 # 6, 10

 

M 04/20

Homework due Weds

5.4 p320 # 14, 18, 26, 34 and 5.5 329 #4

 

W 04/22

We had the 2nd attempt at the unit 2 test today. You may turn in the homework from Monday above on Friday!

 

F 04/24

Homework due Monday

6.1 p346 # 8, 16, 24, 42, 46

 

M 04/27

Keep an eye on the schedule. Those who have not completed the Unit 2 test will have to do so by Weds. 5/6 next week. Then the first attempt at the Unit 3 test will be on the following Weds. If you pass the first attempt of that test by then, you will be done for the semester…that is how close we are to the end! If you need another attempt, that will occur the following Weds.5/20. Then finals week starts and you will have one last chance the next weds. 5/27. The sooner you finish, the better off you will be for studying in your other classes!

I can offer you another chance at the Unit 2 test on Friday 5/1 this week from 8:10-9:00 or 10:10-11:00 with one of my other classes which will be taking a test. Let me know if you want that. Otherwise, you will have to schedule outside of class with me for Monday 5/4 or Weds. 5/6.

Homework due Weds.

6.2 p354 # 4, 10, 12, 20, 28

 

W 04/29

Homework due Friday

6.2 p355 # 40, 42, 44, 50, 54

The last day to pass Unit 2 test is next week weds. 5/6. If you do not pass it by then, you will receive no credit for the course. If you do not feel that you will have the time to bring up the material and finish it by then, you may want to consider the withdrawal deadline, which is tomorrow.

 

F 05/01

Homework due Monday

6.3 p363 # 8, 12, 18, 24, 28

The last day to pass Unit 2 test is next week weds. 5/6. You must make an appointment with me to take it on Monday or Weds. next week. If you do not pass it by then, you will receive no credit for the course.

 

M 05/04

Homework due Weds

6.5 p379 #4, 12, 18, 21, 23

 

W 05/06

Homework due Fri

We started work on section 6.6 with sales tax in general. Your hmk is to bring a receipt where tax was charged and show the calculations to verify that tax. What is the tax rate for the area your receipt comes from?

 

F 05/08

We have some work to do in ch 10 with negative numbers before we end the semester, so we started work on that today. We looked at adding and subtracting with negative numbers, and will finish up on Monday with multiplying with negative numbers.

Homework due Monday:

10.2 p594 # 8, 16, 18, 22, 30   and   10.3 p599 # 2, 8, 10, 14, 28

You will have your first chance at the Unit 3 test on Weds. and it will have the following format:

  1. section 4.3 p241 problem like 0.694 x 2.2

  2. section 4.4 p251 problem like 2.5 divided by 0.42

  3. section 4.5 p260 problem like find decimal notation for 7/8

  4. section 5.4 p320 word problem proportion like ex.2 p315

  5. section 6.1 p346 problem like find percent notation for 0.0157

  6. section 6.2 p355 problem like find fraction notation for 25 3/8 %

  7. section 6.3 p363 problem like “13 is what % of 260?”

  8. section 6.6 p390 problem like #3

  9. section 10.2 p594 and 10.2 p599  and 10.4 p604 maybe a set of problems

          such as   -23+45 and -17-(-2) and -13*(-15)   that all have to be correct!

10. section 10.3 problem like 60 –15 + (–22) – 17 + 13 + 42 –5 – (–3)

 

M 05/11

Do problems for yourself (not to turn in) in section 10.4, and look above for the format of Unit 3 test you will take on Weds. Those who do not pass on Weds. will come on Fri and Mon for more instruction!

 

W 05/13

I’ll have your Unit 3 1st attempt back to you on Friday!

For those that did not pass it this time, we will work on the problems on Friday and Monday, then you will have another attempt on Weds.

 

M 5/18

No one came to review today, so I left after about 10 minutes. I assume that means that you feel ready, not that you have disappeared! You must come on Weds. 5/20 to try again if you did not pass it the first time (a very few passed it!). If you wait until finals week to take it and are not ready by then, you risk losing your credit for the semester. Don’t go there!

 

W 5/20

No one came to the last review day on Monday, but apparently, a number of you needed the review after all, judging from the 2nd attempt on 5/20. There are still quite a few of you who need to take the 3rd attempt of the Unit 3 test. You must come to our usual room on Weds. 5/27 from 9:10-10:00 and be prepared to pass…otherwise, you will not receive credit for the course. There will be no more attempts after 5/27.