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Transcript of FRACTIONS
Adding and subtracting Fractions
add and subtracting mixed numbers
If you can add and subtract normal fractions than now we'll learn how to do the same thing but with mixed numbers. Adding- 1.First you have to make sure that you covert the mixed number into an improper fraction 2. Then make sure you have like denominators 3. Once you found the LCM you would add like normal 4. Finally change your answer back into a mixed number.
Subtracting- 1. Make sure that the you convert the mixed number into an improper fraction 2. Find a LCM and subtract the numerators and keep the denominator 3. Then convert your improper fraction to a mixed number if needed
Multiplying& Dividing fractions
To multiply fractions you multiply straight across. You multiply the two numerators by each other and use that product as your new numerator and to get the new denominator you multiply the two current denominators together. Now you just simplify the new fraction if needed. = 15/21
To divide fractions you take the second fraction and turn the fraction into it's reciprocal. A short cut would be if there are any factors diagonally in the fractions simplify them then multiply them straight across. Simplify the final product if needed. =1 1/3
Fractions are very important in math. Fractions aren't whole but they are parts of a whole. In fractions there are numerators and a denominator.
The top is showing how many parts we have out of a whole. The bottom is showing how many parts it takes to make a whole. example:
converting fractions into improper& mixed
To understand fractions you need to be able to make fractions into improper and mixed
Improper: You would be using a mixed number to turn it into an improper fraction. 1. take the denominator and multiply it by the whole number 2.Then add the product by the numerator 3, once you have that number you use that as your new numerator and keep the same denominator.
Mixed number. 1. Take the improper fraction and divide the numerator by the denominator 2. Take that number and use it as your whole number 3, Use the left over as your numerator and keep the same denominator
skill is to be able to add and subtract fractions. ADD: If you already have like denominators then all you have to do add the numerators then simplify if needed. 2.If they don't have like denominators you have to find the Least common multiple. 3. Use that number as your new denominator 4. The 3 would become a 15 and the 4 would become an 8. 5.Then just add like normal and simplify if needed .Subtracting: If they have like denominators just subtract like normal and simplify if needed. If they don't have like denominators then you find the LCM and and the 2 would become a 8 and the 1 would become a 3 and 8-3=5 so the answer would be 5/12
3 1/3- 2 2/5= 14/15
Dividing and multiplying mixed numbers
Dividing and Multiplying mixed numbers is basically like doing it with just fractions. 1. First you would turn both the mixed numbers into improper fractions 2. Find the reciprocal for the 2nd improper fraction 3. Then multiply the fractions by each other, numerator by the numerator and denominator by the denominator.
Multiply mixed fractions is easy 1. Convert the mixed fractions into improper fractions 2. Before you cross multiply you can(option) cancel out diagonally if you see numbers that can go into each other. If you don't do that
Converting fractions into decimals
When you are converting fractions into decimals 1. You divide the numerator by the denominator. So doing this fraction you would get 0.6 and that would be your decimal. This method will always work.
Another example is 7/20 which is 7 divided by 20 and that equals 0.35
I have earned that i am a visual learner which means that i learn by seeing something done. I couldn't learn by just hearing something and then having to do after that. I actually have to see the teacher do an example and explain with work of what he/she is doing. This will benefit me in school by me being able to make sure what i am doing is right. If I learn by seeing then you can bet that i will write down a lot examples so i can make sure that i understand what i am learning and don't forget. Looking back at examples might help me remember something that i would've forgotten anyway. This will help me in life by me wanting to write stuff down to make sure i am doing it right and so i won't forget anything that is important. So with wanting to see something visual I will also want to write stuff down and that can really help me in real life.
= 8 1/2