841 Math Blog

Adding Fraction

1. Find the common denominator.
2. Add the numerator to numerator.
3. Add the denominator to denominator.
4. If it can be simplified, simplify it.

Subtracting Fraction

1. Find the common denominator.
2. Subtract the numerator to numerator.


3. Subtract the denominator to denominator.


4. If it can be simplified, simplify it.

Adding Mixed Fraction

1. Convert mixed fractions into improper fractions


2. Find the common denominator.


3. Add the numerator to numerator.


4. Add the denominator to denominator.


5. If it can be simplified, simplify it.

Multiplying Fractions

1. Multiply the numerator to numerator.


2. Multiply the denominator to denominator.


3. If it can be simplified, simplify it.

Multiply Mixed Fractions

1. Convert mixed fractions into improper fractions.
2. Multiply the numerator to numerator.


3. Multiply the denominator to denominator.
4. If the answer is improper, convert improper fractions into mixed fractions.


5. If it can be simplified, simplify it.

Dividing Fractions

1. Find the reciprocal of the fraction (flip one of the fraction).
2. Change dividing into multiplying.


3. Multiply the numerator to numerator.
4. Multiply the denominator to denominator.


5. If it can be simplified, simplify it.

Dividing Mixed Fractions

1. Convert mixed fractions into improper fractions.
2. Find the reciprocal of the fraction (flip one of the fraction).


3. Change dividing into multiplying.
4. Multiply the numerator to numerator.


5. Multiply the denominator to denominator.
6. If it can be simplified, simplify it.
   
   

Problem #2

Problem #3

Problem #1
Problem #2You need to find out how long each side of the square is. Then that will give you side "A" and "B" for the triangles since they're both the same length. Ok so, like a normal question find the length of the hypotenuse, which is 'c'. Once you have got that you can now label the triangle and add up all the sides to find the perimeter.

These are my videos with Carrie and Arielle.

Hello classmates from 8-41 ! (: Well, today I'm the scribe. Anyways. today in class we corrected the homework from yesterday. It`s the ones from the barn door booklet. Here are some of the questions.


Here are the steps for solving an algebraic equation:

First, you must isolate the variable.
Second, you must cancel by using the opposite.
Third, you must balance so the other side is the same as the other.
Finally, you must verify (substitute).
















Here's another one.






















There`s more questions but I just pick 2. One`s an additive and the other`s subtractive equation. :) After correcting the questions, Mr. Harbeck gave us homework. Talking about homework, we have to answer these questions before 9:00 o`clock TOMORROW!






I hope you guys liked my scribe! (; If you see any mistakes, please comment on this, thank you! :) Now for the next scribe I choose is...........................................CARRIE ! :P HAHA, good luck !

For my act of kindness, I'm going to help anonymous people like the elderly, children, and the homeless. Some of my ideas to pay it forward was to help babysit for free, volunteer at a soup kitchen like the Saloam Mission, do chores at home without being told, do community service and donate money, clothes and toys . I'm going to pay it forward during the winter break.





What I ended up doing was I shoveled my neighbor's sidewalk and their driveway. It was really fun shoveling. It was kind of hard because it was snowing out and I had to shovel it over again at least twice but it was worth it. Just by helping one person made me feel special because I know I did something good for them. My neighbor doesn't know that I shoveled her driveway but I think that she would be surprised and really happy. I could not tell my neighbor to "Pay it Forward" in person because she was not at home. So I just made a letter that says "Pay It Forward" and inside there was the meaning of "Pay it Forward". I also said thank you for the help she had done to my family.

I think that one person can make a difference. I think that we can all learn to be a bit more selfless and help other people who needs help. Even if you make a little difference it doesn't matter because it's a huge difference ! EVERY PERSON COUNTS!

Nick "Same here. Well I haven't seen you in the hallways at school in a while."
Alex "Oh that's because I'm been busy helping other students. That's all."
Alex "Hey listen I have a test tomorrow for math."
Alex "Well i kind of need help on it. Will you help me?"
Alex "It's about an algebra question. So, what is n+3-5n+12?"
Nick "Let me think. I think it is 4n+15."
Alex "Oh, well I think the answer is -6n+15."
Nick "Okay. Well, let us see. We first have to circle and regroup."
Alex "So I guess it would be n-5n+3+12."
Nick "Then you must simplify."
Nick "I think the answer is 4n."
Alex "Okay, but I think it's -6n instead of 4n."
Nick "Yes but it says that you have to subtract a number to 5n."
Nick "So the answer for +3+12 is +15!"
Nick "I guess the mistake that you made was that you added n and 5n together instead of subtracting it. Then that's why you got -6n."
Alex "Thank you!"
Nick "Since you asked me that kind of question. Well, I need help too."
Nick "It's a math question too. It's 2 + 4(3n+8)."
Nick "Well I think the an 12n + 10."
Alex "Oh. Let us see what we get with the right steps of how to do this. Okay? So this time we have to first identify the terms. That is 3n and 8.Then you multiply +4 and 3n. You'll get +12n."
Nick "Okay then you have to multiply +4 and +8? Then yeah I get +32"
Nick "Oh okay. Then I guess that's where I did mine wrong. I forgot that you have to multiply the ones in the brackets."
Alex "Well I guess so but let's see if you have anything else wrong."
Alex "Well, at the beginning we should have taken the 2 and bring it down."
Nick "We should have 2+12n+32?"
Alex "Yes! Then like the other question you have to circle and regroup them."
Alex "Then we'll end up with 34+12n."

Here are some additive, subtractive, Multiplicative and divisive eqatuons.

Additive:

I solved this equation by using these 4 steps. First, isolate the variable, second cancel the opposite, third balance and forth verify. So, the first thing I did was I rewrote the equation and added the opposites. Then I canceled the opposite. Then do it on the other side so it would be balanced. So, then you get n=2. But you're not done yet because you have to verify. So I rewrote the question and I replaced the n to 4. So the answer will 5=5.

Subtractive:


This is how I solved this equation. First, I rewrote the equation, then I isolated the opposites. After I isolated the oppsites, I went and I canceled the opposites but you have to do it on the other side of the equal sign so it would be balanced. Well you're not done yet because you have to verify. So I rewrote the question then I replaced the n and put 11 because that was my answer earlier. Then the answer in 7=7.






Multiplicative:

This is how I solved this equation. So I rewrote the equation like I always do. Then I divided 2n to 2 to isolate the variable and canceled the zero pairs after. I did it on the other side so it would be balanced. So the answer would be n is equal 3. Then you have to varify if my answer was right. So I rewrote the question, then I replaced the n and multiplied 3. Then the answer would be 6=6.

Divisive:

This is how I solved this divisive equation. At first I started to rewrite the question, then I isolated the variable. So I multiplied the 4 to n divided by 4 and I also multiplied 4 and 3. Then I canceled the opposites. So the answer would be n=12. But I wasn't done yet because I haven't varify yet. So I rewrote the question again like I always do. Then I replaced the n and preplac it for 12. So the answer for this equation is 3=3.

During class, Mr. Harbeck told us to make a video about algebra equations using algetiles and in writing. We couldn't finish it at school because we kept restarting like 5 times. So I did it for homework this weekend.

It was a typical day at Integeria Island. Pablo woke up at 6:30 in the morning like always and got dressed up to go to school. After eating his breakfast, he went to pick up his friend Austin so they could walk together. On his way to Austin's house, Pablo tripped over a rock and rolled down the hill. When he stopped, he bumped into a tree. When he woke up, he didn't know where he was and he was really scared. Then he noticed the tree saying something. Then Pablo asked the tree which way is the path from here. The tree said "if you solve this question I'll show you the way out of these woods and get back to the path" and still pick up Austin on time for school. So, the tree asked Pablo what was (-8)+(+8)+(-2)= what ? It was a standard integer question!
When he got to his friend Austin's house. When he knocked on the door he noticed a brush filled with rose flowers and they were pretty. Beside that bush he saw another integer question and the question says that if he answers this question he will get better when answering integer questions. So, Pablo was trying to answer this question and it says (+6)+(-2)= ? Pablo tried so hard but he couldn't answer this question. So he knocked on Austin's door and he answered. Pablo asked if he could him with the integer question that was outside his home. So they tried to answer this question with the relation of money. So Pablo said "If you have 6 dollars and you owe my 2" Then he asked "How much do you have left?" Then Austin answered "Then I only have 5 dollars left." Then they both said that the answer is (+5). And there were right and also improving in math. After answering that question they were really happy. They were happy that they answered it right and they are really improving on answering integer questions.When they were walking to school they suddenly saw a little box at the edge of th path and it says "What is (-7)+(+2)
equals to?" This question was a hard one too because they are still learning how to use the integer chips at school and they wanted to use the integer chips on this one. But they still tried to use the integer chips. It was really hard but they answered it anyway and they got (-5). It was (-5) and they started jumping because they didn't know how to use the integers chip but they tried, so they got the right answer.

After jumping so happily they noticed that Austin forgot his backpack at home. So they went running back to Austin's house because they didn't want to miss school and especially they don't want to miss their math test...
TO BE CONTINUED...
Continuation:
On their way back to Austin's house as fast as they can. "Hurry up Pablo before my parents leave the house!" Austin's said. When they got to the house, they knock on the door and no one answer. They a bird flew over them and dropped a piece or paper. It read: If you answer this question, you will find the key to the door. What is 9-23=__ So austins thought about it and yelled the answer. "The answer is -14" Then the bush and the side started to flash. "There's the key!" Pablo yelled. He quickly grapped it and gave it to Austin. He opened the door and quickly ran upstairs to his room and look for his backpack. When he found it he quickly ran downstairs. They quickly ran outside to lock the door but they can't. Then they found another piece of paper and it read: You must answer this question and the door will lock. What is -10-3+8-2+__ Austin and Pablo thought about it and they got -7. Then this time it was Pablo who yelled it and he yelled "The answer is -7!" The door closes and they got back to school safely and did the math test and they past. I think it's finish.. THE END

Today, we worked on adding Integers. This will be our last assignment before we learn how to subtract and multiply them. They are on page 44 on the yellow booklet.

Mean: The sum of a set of data divided by the number of data. The average.