You should do as many problems as you can pg 252-255!
Chapter 5 pg 254 Answer Key
Basically, the MORE work you do in preparation for Wednesday, the better day of review you will have.
Also, those of you that had problems with the previous homework on PROBABILITY should redo your work, based on today's lesson.
hw #5-8
pg 252-253 Chapter 5 Review
#1-5 All
#6-31 Odds for Wednesday, Evens for Friday
pg 254 Chapter 5 Test
For now, focus on the word problems #12,17,27,30,31,35
can we us calculators on the test
ReplyDeleteI am expecting that you are using calculators for your homework.
ReplyDeleteIf I asked you to find an exact percentage for 18/201, I would expect you to use a calculator. If I asked you to ESTIMATE the same problem as a percentage, I would expect that you could answer without a calculator.
There may be a calculator and non-calculator section on this or any test.
Mr.Chamberlain I have a question on problem 11 on pg 252.After looking at pg 211 in my textbook figured out how to turn a percent into a fraction but please clarify my method for solving it.
ReplyDelete=33.33divided by1/100
Kyle
Would help u kyle but not sure what ur asking Srry
ReplyDeleteJess
Hi Kyle, 33 1/3% is something I hope we all recognize as 1/3.
ReplyDeleteMathematically, you can still use the procedure on pg 211 as long as you realize how to convert the percentage into an improper fraction:
33 1/3% = (100/3)%
So...
(100/3)/100
= (100/3) * 1/100
= 1/3
right?
We'll go over it in class tomorrow!
oh thanks I see what your saying.If you are converting a whole number though like 27 can you convert it to 2 7/10 or 27/10
ReplyDeleteKyle
yup!
ReplyDeleteis it possible for you to post the answers for the chapter test on the blog? so i can check my answers...? please?!
ReplyDeleteYour wish is my command... too bad you can't wish for test scores... those have to be EARNED!
ReplyDeleteWhen you estimate a percent like 76% of 48 would you put the answer as a percent or would it just be a number. Also for estimations like 20% of $23.87 would the answer be w/ a dollar sign or just a #.
ReplyDelete-Maggie
thanks for posting the answers! :)
ReplyDeletebut now i have some questions...
how would u solve the following problems using a proportion?
68 is 5% of what number?
350% of what number is 21,000?
also, will using an equation to solve questions, like the ones above, be on the test? if so, how do u solve those?
lastly question 28 on the chapter test is confusing me. i know the answer is $60.30, but i just dont understand how to get that answer?!
can you help?
If you are asked to estimate 76% of 48 (a naked number - no context), the answer would be a number... 76% is close to 75% or 3/4, so the best answer in this case would be 36.
ReplyDeleteIf you are asked to estimate 20% of 51 bagels, you would answer 10 bagels, since 20& of 50 is 10. If asked about dollars, answer in dollars. If the questions has words and numbers (or symbols like $$, then the answer should have words and/or symbols along with the numbers.
NO NAKED NUMBERS in word problems!
GONE FISHIN'
ReplyDeleteI will be out for most of the night (yes, ANOTHER math party!) so you guys will have to answer each others questions... sorry!
68 is 5% of what number:
ReplyDeleteThere are two ways to answer this question:
1) With a proportion, it should be clear to you from the way the question is phrased that 68 is the part, and you don't know the whole:
5/100=68/x
... and solve using cross products
2) With an equation:
5% of some number, x, is 68
so, you could write the equation:
.05x = 68
divide both sides by .05 and you have your answer.
We do not need to know compound interest for the test right???
ReplyDeletei dont thinks so.....
ReplyDeletei still dont understand how to solve problems like 350% of what # is 21,000?!
ReplyDeletehelp?!?!?!
A spinner has 6 sections of equal size labeled with the numbers 1, 2, 3, 4, 5, and 6. Find P(not 9) if you spin the spinner once. Express the probability as a fraction and as a percent. Round the percent to the nearest hundredth, if necessary.
ReplyDeletehow do u solve a problem like this??
^^ its from the online quiz.
Compound interest is not required for the test.
ReplyDelete350% of what number is 21?
Well, the "what number: is the whole, right?
So, with a proportion, we can say:
350 is to 100 as 21 is to "what number":
350/100=21/w
Create our cross products and solve:
350w = 2100; div both sides by 350
w=6
OR...
we could have solved with an equation:
3.5w = 21; divided both sides by 3.5
w=6
If the spinner is labeled 1 thru 6, the prob of NOT getting a 9 is pretty darn good, 100% or 1 in fact, yes?
ReplyDelete