841 Math Blog

1. Add and subtracting fractions isn’t that hard. All you have to do is add (or subtract) the top number and then you write the sum over the common Denominator.

2. Multiplying Fractions isn’t all that hard either. If the Fraction is not in its lowest terms then you must simplify. After that you multiply the numerators to get a new one. Then you do the same to the denominators. If you can simply go for it. Here is a Picture. \/ \/ \/

(sorry that its kind of big)

3. To divide fractions you must flip the divisor. Then you just multiply the fractions. Sounds Easy. Here is a picture. \/ \/ \/

( again sorry that its kind of big)

4.

Question 1)



A) 3 1/2 x 3/1=


7/2 x 3/1=



=2 1/2

=10 1/2



She worked 10 1/2 hours.



B)9/1 x 2 1/2= 189/2

=94 1/2



94.50



she earned 94.50 $



Question 2)

8 1/2 x 11/3=

17/2 x 4/3= 68/6

=112/6

=11/3



Question 3)

3 1/2 x 4/5

7/2 x 4/5= 28/10
=2 8/10
=2 4/5

It took over 2 4/5 hours to get to grandmas.

Question 4)

3/5 x 5/1= 5/5

=3/1

=3

5 tanks of gas are used over 5 work days.

THE TULSA TIMES



Fire takes life of 1.....takes hearts of many.....


The young boy Johnny Cade passed away today due to intense 3rd degree burns to his whole body (except for his head). The young boy passed away peacefully in his hospital bed this morning. His last words were to Ponyboy Curtis who could not be reached for comment.Keith Matthews (or as his friends call him "Two-Bit") had this to say: "Shot man....i promised the guys I wouldn't cry......he was a good kid and now hes gone...."





Dallas Winston (or Dally as his friends know him said:



JOHNNY WAS THE ONLY THING THAT I EVER LOVED.....AND NOW HE'S GONE.-Dallas Winston

The reason Poor young Johnny had died was because he and another young by named Ponyboy Curtis. He was injured to but he was saved by a leather jacket. Ponyboy and Johnny had both saved several children from the burning fire.One of the people that could be reached about the fire was a young man named Manfred Benton he said (and i quote) "Those kids are no account varmints" These to young boys will be remembered as heroes forever forever.



















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Hi my name is Brenden and I'm sorry but i don't have any pictures because my family and I didn't have a computer for the ENTIRE Christmas break and on top of that our camera wasn't working.

I did 2 things to help out my family.
1. On Christmas day i helped vacuum and clean up the house for company that was coming over.
2. Without being asked to I shoveled twice. I shoveled the walk, stairs, and driveway on boxing day and January 3.

Also in the past I have volunteered at the Arthritis Society, Hemophilia Society and have twice gone to deliver Christmas hampers with my mom.

Some things i have done to help out at the Arthritis I help out a women named Bonnie Hopps put information packages together about Arthritis and Fitness, and i stamped and labeled brochures.

Some things that i have done at The Hemophilia Society are Handing out water at the Puma Road Races. I also helped get the food ready and hand it out to the runners when they were done running.

PART 2

Hello son! Whats going on?

Im just going to my band practice.

That sounds like fun. But first your going to have to tell me something.

Whats that?


Can you tell me what N means?

It's a number value.

Good job son! Your very bright!

Thanks dad.

Can you solve N plus 4?

No i can't because you didn't give me the sum of the question.


Im glad you caught that. The sum is 14.

ok then N would be 10.

Great job!

How did you get that answer?

First i needed the sum.

Then I figured out what went into 4 to make 14.

Wow thats great!

Now can you tell me what N plus N multiplied by 6 is?

Can i have the sum please?

Its.....54.

Ok....5 plus 4 equals 9 so then.....6 times 9 is......54!!

Wow son thats very good.

Oh i think the band is here.

Bye dad!

Bye son! Good luck!





































Chapter 4

Today in class we did DIVIDING INTEGERS. We learned about QUOTATIVE DIVISION and PARTITIVE DIVISION the question we used as an example was 6 divided by 2

Some other ways you can write six divied by 2 is: 6 divided by (+2), N divided by 2 = 6.

ooo ooo imagine this was to groups of three. (my images wouldn't upload so i had to improvise)

Quotative Division is how many twos are in six.



Partitive Division is how many parts are in two groups when we have six.





The next scribe is.......alex.h

INTEGER STORY

Once there was an integer that was so tough that he could solve any question in single thought. One day he was eating a zero pair sandwich when all the sudden the mayor of

Ultra-vile came and said to super integer “ You will go and find the lost temple of the cantaloupes !” so then SI (which stands for Super integer) said “why is this?” then the mayor said “Because we need our greatest integer to go to the temple and answer the 4 questions” “ I will go !!” said SI. SI was eating a +2 cookie when all the sudden a little old man jumped out from the bush. “What is (+2)+(+3)”??? said the old man. Ummmmm….(+5) said SI. Hmmmm…..very good we have been expecting you. SI was completely confused. He had no idea why there were old people asking him integer questions. He continued on his way. It was about 2:30 in the afternoon when al the sudden an old woman jumps out of the bush. “What is (+5)+(+12)???” she said. SI was confused he was looking at the old woman when he said “Ummmm……….(+17)??”

VERY good. “My husband was right you are a smart one” she said as she jumped back into the bush. SI who was now starting to wonder if old people coming out of bushes is a regular thing kept on walking towards the temple. It was about 4:32 and he could see the temples tallest tower he was walked up the stairs he heard and echoing voice say “ What is “(+23)+(+43)??” SI was really starting to worry he said “Ummm………. (+66)??” then the voice said “good job & good luck” SI was walking up the stairs and then all the sudden a stone tablet dropped in front of him. A voice boomed “ SHOW YOUR WORK!!” so then he said “ For what ??” the voice boomed again “FOR THIS QUESTION” “What is (+2)-(-5)” As SI was thinking of the question he noticed that the walls had spikes and they were moving in on him. First he wrote out the question then he changed it to look like this (+2)+(+5) so then the walls were closing in on him he just finshed question just as the spike was hitting his face it stopped right at his nose. He then heard the voice “ YOU MAY KNOW STEP INTO THE LIGHT”. SI stepped into the light and then all the sudden POOF he turned into a potato.

MEAN

The mean may often be confused with the median or mode. The mean is the arithmetic average of a set of values, or distribution; however, for skewed distributions, the mean is not necessarily the same as the middle value (median), or the most likely (mode). For example, mean income is skewed upwards by a small number of people with very large incomes, so that the majority have an income lower than the mean. By contrast, the median income is the level at which half the population is below and half is above. The mode income is the most likely income, and favors the larger number of people with lower incomes. The median or mode are often more intuitive measures of such data.


MEDIAN

In probability theory and statistics, a median is described as the number separating the higher half of a sample, a population, or a probability distribution, from the lower half. The median of a finite list of numbers can be found by arranging all the observations from lowest value to highest value and picking the middle one. If there is an even number of observations, the median is not unique, so one often takes the mean of the two middle values. At most half the population have values less than the median and at most half have values greater than the median. If both groups contain less than half the population, then some of the population is exactly equal to the median. For example, if a < b < c, then the median of the list {a, b, c} is b.


MODE

In a set of data, the mode is the most frequently observed data value. There may be no mode if no value appears more than any other. There may also be two modes (bimodal), three modes (trimodal), or four or more modes (multi modal). In the case of grouped frequency distributions, the modal class is the class with the largest frequency.As a set of data can have more than one mode, the mode does not necessarily indicate the centre of a data set. The mode will be close to the mean and median if the data have a normal or near-normal distribution. In fact, if the distribution is symmetrical and uni modal, then the mean, the median and the mode may have the same value.

Today in math we did a worksheet called Gumball machine. On the page there were 8 questions.

1. Imagine that a gumball machine contains 1 red, 2 green, 3 yellow, and 4 blue gumballs that thoroughly mixed before they were put into the machine which color do you think would come out? Explain your answer.