operations with fractions

a step by step instruction

steps by step with addition and subtraction

Step 1:find the common denominator of the fraction by multiplying the two denominator.


Step 2:and what ever you do with the denominator you have to do with the numerator


Step 3: now add the numerators but don't add the denominator


Step 4:simplify your answer by finding the least common multiple of the numerator and denominator.


Step 6:answer


You can also do the same thing with subtraction


Khon academy example below

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Step by step multiplying with fractions

Step 1:question


Step 2:multiply the numerator with the numerator and the denominator with the denominator


Step 3:simplify your answer


Step 4:answer


Now you now know how to multiply fractions.


Khon academy example below

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dividing fraction

Step 1:question


Step 2:Change division to multiplication sign


Step 3:flip the numerator and denominator of the last fraction


Step 4:multiply


Step 5:turn into a mixed fraction if needed and simplify


Step 6:answer


Now you know how to divide fractions


Khon academy example below

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With fractions

Adding and subtracting decimals

Addition

step 1:take out your decimals for now


Step 2:just add normally


Step 3:get your answer


Step 4:bring decimal straight down


Step 5:Done!


Khan academy and my example below

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subtracting decimals

Step 1:take the decimal out of the problem before you start.


Step 2:subtract


Step 3:bring decimal straight down


Step 4:answer :-)


khan academy and my example below

multiplying fractions

Step 1:Take decimal out of problem


Step 2:Multiply


Step 3:answer(almost)


Step 4:count how much the decimal is away from the least place value


Step 5:add the numbers in step number 4


Step 6:count how many numbers there are from the last place value in tell you get to the number you got in step number 5.


Step 7:add decimal


Step 8:answer


Khan academy and my example below

dividing decimals

Step 1:get the number that is outside the house and count how many digits there are to the right of the decimal and put the decimal as right as possible


Step 2:do the same thing as step1 but use the numbers to the right of the digit in step 1 and put it to the right with the number


Step 3:divide


Step 4:answer


Step 5:bring decimal right up.


Khan academy and my example below