Francis LaSt BlOg PoSt
Finally...... Fraction is over and I think I learned enough of what I need to learn for the exam....If you need some help, you can look at What I've learned if you still don't know how...
AdDiNg FrAcTiOn
Adding Fraction is easy if you know how to add numbers and things.
-The first thing you need to do is make the denominators of each fraction same equal pieces
-you do that by multiplying the denominators and whatever the answer is will be you equal pieces.
-After that you multiply the numerators by how you got the equal pieces answer by multiplying the (9xsomething) if you got the answe (36) then if you multiply the 9 by 4 then you multiply the 8 by 4 too, you do that with the other one too..
-if you got the numerators then add it.
If you want to check it, you check it with drawing it...
SuBtRaCtInG fRaCtIoN
-Subtracting is almost the same as Adding Fraction except that in the end you subtract the numerators and get the answer
-I'm not going to expalin it but you can tell by the picture....
Mixed numbers on ADDING
MuLtIpLyInG FrAcTiOn
Multiplying Fractions is just the same as Adding Fractions and Subtracting but the one that messes it up is the little multiplication sign on the middle
-Multiplying fractions are easy because all you do is multiply the denominators and the numerators.
9 2 18
- x - = -
10 3 30
All this means is that 9/10 groups of 2/3 is 18/30 simplified into 9/15.\
Mixed Fractions on Multiplying
DiViDiNg FrAcTiOnS
Dividing Fractions is easy if you know the word Reciprocal
Instead explaining it to you I can show it in pictures
WoRd PrObLeMs To SoLvE
Bobby's Last Fraction Post
Okay, so uhm. fractions are over, YES!!
So, now here's my last post about fractions.
Enjoy!!
How to subtract fractions
Subtracting fractions is easy.
Here's the first question :
6/12 - 3/4=
First we need to find what 12 and 4 goes into. We could multiply each other, and we get 48. We could use 48 but just 12 is more easier. We multiply 12 by 1 and 4 by 3. Those both equals to twelve. Then whatever we used to multiply the denominator we multiply it with the numerator. So, we multiply 6 by 1 and 3 by 3. Now, it's like this : 6/12 - 9/12=
Now, we solve it: 15/12. Here we have an improper fractions, we could make this into a mixed number by dividing 15 with 12. so it's: 1 3/12.
Here is a picture of it:
How to Add fractions
I'm going to explain three questions.
Number one is:
2/3 + 1/8
What you do here is you find the quotient of 3 x 8.
Then whatever my answer that becomes my denominator.
In this case, it's 24. So, your denominator will be 24. /24 + /24.
Now, it's time to look for the numerator. I will multiply the number 8 by 2 because 2 is the number I multiplied it with the number eight to get the 24 I wanted for the denominator.
I will do the same thing on the other side but different numbers because i used a different number to multiply it by 8 to get 24. So, the number is 3, then I would multiply it by 1 and the quotient is 3.
All this becomes like this:
16/24 + 3/24
Since both denominators are the same, all I need to add is the numerator.
The answer is 19/24.
Here is a picture of the question.
The next question will be a mixed number, it will explain and show how to add mixed numbers.
1 2/3 + 1 1/4=
If it's a mixed number then just add the whole number. So, here it's 2__.
Then we just solve the fractions, so it looks like this: 2/3 + 1/4=
We multiply both denominators and we get 12. Now, the denominator is 12. We multiply 2 by 4 and 1 by 3, the answer now is 8/12 + 3/12=.
We get 11/12. We put the 2, 2 11/12.
Here is a bad picture of it :)
Multiplying Fractions
Fraction is very easy, you just multiply both numbers in the numerator and multiply the numbers in the denominators.
So here, it's 4 multiply by 1 equals 4. Then 6 multiply by 2 equals 12. So, it's 4/12. We could simply it down to 1/3.
Multiplying mixed numbers
2 2/6 x 1/12
If we have a mixed number in our questions all we have to do is make it a improper fractions. To do that, we multiply our whole number to the denominator then add the numerator. Then we just solve, 14 by 1 and 6 by 12. The fraction comes as an improper then we just divide it. Then we get 2 1/4.
How to divide fractions
To divide we just have to do the reciprocal.
It shows clearly on the picture.
MIXED FRACTIONS
To divide mixed fractions we just make the mixed fractions to an improper fractions. Then we do the reciprocal.
If the numerator is larger than the denominator, we just divide the 9 into 20
WORD PROBLEMS!!!!
Problem 1
Sentence:
15 scoops make ___ cake.
15 scoops make 6 2/3 cake.
Problem 2
It was sunny for ___ hours that day.
It was sunny for 3 1/2 hours that day.
Finally, I'm done.
So, now here's my last post about fractions.
Enjoy!!
How to subtract fractions
Subtracting fractions is easy.
Here's the first question :
6/12 - 3/4=
First we need to find what 12 and 4 goes into. We could multiply each other, and we get 48. We could use 48 but just 12 is more easier. We multiply 12 by 1 and 4 by 3. Those both equals to twelve. Then whatever we used to multiply the denominator we multiply it with the numerator. So, we multiply 6 by 1 and 3 by 3. Now, it's like this : 6/12 - 9/12=
Now, we solve it: 15/12. Here we have an improper fractions, we could make this into a mixed number by dividing 15 with 12. so it's: 1 3/12.
Here is a picture of it:
How to Add fractions
I'm going to explain three questions.
Number one is:
2/3 + 1/8
What you do here is you find the quotient of 3 x 8.
Then whatever my answer that becomes my denominator.
In this case, it's 24. So, your denominator will be 24. /24 + /24.
Now, it's time to look for the numerator. I will multiply the number 8 by 2 because 2 is the number I multiplied it with the number eight to get the 24 I wanted for the denominator.
I will do the same thing on the other side but different numbers because i used a different number to multiply it by 8 to get 24. So, the number is 3, then I would multiply it by 1 and the quotient is 3.
All this becomes like this:
16/24 + 3/24
Since both denominators are the same, all I need to add is the numerator.
The answer is 19/24.
Here is a picture of the question.
The next question will be a mixed number, it will explain and show how to add mixed numbers.
1 2/3 + 1 1/4=
If it's a mixed number then just add the whole number. So, here it's 2__.
Then we just solve the fractions, so it looks like this: 2/3 + 1/4=
We multiply both denominators and we get 12. Now, the denominator is 12. We multiply 2 by 4 and 1 by 3, the answer now is 8/12 + 3/12=.
We get 11/12. We put the 2, 2 11/12.
Here is a bad picture of it :)
Multiplying Fractions
Fraction is very easy, you just multiply both numbers in the numerator and multiply the numbers in the denominators.
So here, it's 4 multiply by 1 equals 4. Then 6 multiply by 2 equals 12. So, it's 4/12. We could simply it down to 1/3.
Multiplying mixed numbers
2 2/6 x 1/12
If we have a mixed number in our questions all we have to do is make it a improper fractions. To do that, we multiply our whole number to the denominator then add the numerator. Then we just solve, 14 by 1 and 6 by 12. The fraction comes as an improper then we just divide it. Then we get 2 1/4.
How to divide fractions
To divide we just have to do the reciprocal.
It shows clearly on the picture.
MIXED FRACTIONS
To divide mixed fractions we just make the mixed fractions to an improper fractions. Then we do the reciprocal.
If the numerator is larger than the denominator, we just divide the 9 into 20
WORD PROBLEMS!!!!
Problem 1
Sentence:
15 scoops make ___ cake.
15 scoops make 6 2/3 cake.
Problem 2
It was sunny for ___ hours that day.
It was sunny for 3 1/2 hours that day.
Finally, I'm done.
To Borrow or to be Improper that is the Question
This is another skills homework assignment. I'm that that great at borrowing, so sorry if there is any mistakes.
This is my first question : 3 1/4 - 1 1/2 = ?
To make life easy the first thing we should do is figure out and find the lowest common denominator.
3 1/4 1 1/2
3 1/4 1 2/4
You can't subtract 2/4 form 1/4. So you have to make 1/4 bigger by borrowing the whole or in
other words 4/4. But you can subtract 1 from 3.
3-1=2 4|4 + 1|4= 5/4 2 + 5/4 = 2 5/4
So why don't we start solving
2 5/4 - 1 2/4
2-1=1
5/4 - 2/4 = 3/4
1= 3/4 = 1 3/4
This is our next question : 50 1\10 - 25 4\5=
The first thing we should do is find the lowest common denominator .
1/10 4/5
1/10 8/10
50 1/10 - 25 8/10
Now you can take away 25 from 50, you have to make the 1/10 bigger by
borrowing 1 whole or another way to say it is 10/10.
50-1=49
1/10 + 10/10= 11/10
49 11/10 - 25 8/10
49 - 25 = 24
11/10 - 8/10 = 3/10
24 + 3/10 = 24 3/10
Now you are finished !!!!
This is my first question : 3 1/4 - 1 1/2 = ?
To make life easy the first thing we should do is figure out and find the lowest common denominator.
3 1/4 1 1/2
3 1/4 1 2/4
You can't subtract 2/4 form 1/4. So you have to make 1/4 bigger by borrowing the whole or in
other words 4/4. But you can subtract 1 from 3.
3-1=2 4|4 + 1|4= 5/4 2 + 5/4 = 2 5/4
So why don't we start solving
2 5/4 - 1 2/4
2-1=1
5/4 - 2/4 = 3/4
1= 3/4 = 1 3/4
This is our next question : 50 1\10 - 25 4\5=
The first thing we should do is find the lowest common denominator .
1/10 4/5
1/10 8/10
50 1/10 - 25 8/10
Now you can take away 25 from 50, you have to make the 1/10 bigger by
borrowing 1 whole or another way to say it is 10/10.
50-1=49
1/10 + 10/10= 11/10
49 11/10 - 25 8/10
49 - 25 = 24
11/10 - 8/10 = 3/10
24 + 3/10 = 24 3/10
Now you are finished !!!!
Question 6
a) 3 1/2 x 3 =
9/2 x 3/1 = 21/2 = 10 1/2
Kristi worked 10 1/2 houres.
b) 9/1 x 21/2 = 189/2 = 94 1/2
in one week Kristi earnd $94.50 dollors.
Question 7
7 x 2 2/5 =
7/1 x 12/5 = 84/5 = 16 4/5
In one week jupitor completes 16 4/5 rotations of Earth.
Question 8
8 1/2 x 1 1/3 =
17/2 x 1 1/3 =
4/1 x 17/3 =
2/1 x 17/3 = 34/3 = 11 1/5
The Boat will ravel 11 1/2 km in 1 1/2 houers.
Question 9
4/5 x 3 1/2 =
4/5 x 7/2 =
4/2 x 7/5 =
2/1 x 7/5 = 14/5 = 2 4/5
It will take you 2 4/5 houres to get to grandmas house at the same speed.
Question 10
3/5 x 5/1 =
3/1 x 5/5 = 15/5 = 3/1 = 3
It will take 3 Tanks of gas it get to work and back for 5 working days.
Question 11
2 1/4 x 8 =
9/4 x 32/4 =
9/4 x 8/1 = 72/4 = 18/1 = 18
Owen will be 18 when Robin celebrates her 8th birthday.
Question 12
3 1/4 x 3/4
13/4 3/4 = 39/16
It will take 39 houres.
a) 3 1/2 x 3 =
9/2 x 3/1 = 21/2 = 10 1/2
Kristi worked 10 1/2 houres.
b) 9/1 x 21/2 = 189/2 = 94 1/2
in one week Kristi earnd $94.50 dollors.
Question 7
7 x 2 2/5 =
7/1 x 12/5 = 84/5 = 16 4/5
In one week jupitor completes 16 4/5 rotations of Earth.
Question 8
8 1/2 x 1 1/3 =
17/2 x 1 1/3 =
4/1 x 17/3 =
2/1 x 17/3 = 34/3 = 11 1/5
The Boat will ravel 11 1/2 km in 1 1/2 houers.
Question 9
4/5 x 3 1/2 =
4/5 x 7/2 =
4/2 x 7/5 =
2/1 x 7/5 = 14/5 = 2 4/5
It will take you 2 4/5 houres to get to grandmas house at the same speed.
Question 10
3/5 x 5/1 =
3/1 x 5/5 = 15/5 = 3/1 = 3
It will take 3 Tanks of gas it get to work and back for 5 working days.
Question 11
2 1/4 x 8 =
9/4 x 32/4 =
9/4 x 8/1 = 72/4 = 18/1 = 18
Owen will be 18 when Robin celebrates her 8th birthday.
Question 12
3 1/4 x 3/4
13/4 3/4 = 39/16
It will take 39 houres.
Sorry im last guys. Here it is!
P.S Charissa and i did our questions together but......CHARISSA HASNT POSTED HERS YET!
sorry .
P.S Charissa and i did our questions together but......CHARISSA HASNT POSTED HERS YET!
sorry .
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