0
What do you do to a fraction before adding subtracting or dividing?
Wiki User
∙ 16y ago
When adding or subtracting, convert all fractions in the question to a common denominator/ 1/2 + 1/4 - 1/3 = 6/12 + 3/12 - 4/12 = 5/12
Wiki User
∙ 16y ago
Add your answer:
Earn +20 pts
Why does the product of two fractions has the same value before and after dividing the numerator and denominator by the greatest common factor?
If you are dividing the numerator and the denominator by the same number (the GCF), it is the same as dividing the fraction by 1, which will leave it unchanged and create the same product.
Why must you find a common denominator before adding fractions?
You can only add like to like. There is no mechanism for adding different types of fraction.
What do you do before dividing by a decimal?
Move the decimal point
What fraction is before 2 miles?
There cannot be any such fraction. If there was a fraction, F then the average of 2 and F, (2+F)/2 would be before 2, and nearer to 2 than F. And then the average of 2 and that fraction would be before 2 and nearer still. And then the average of 2 and that fraction would be before 2 and nearer still. And so on.
Estimate the subtraction of 15.63 and 8.497 both to the nearest number before subtracting?
16 - 8 = 8
What did you learn from adding and subtracting fractions?
I learned to always change the denominators before adding or subtracting the numerators. You must always have a common denominator before adding or subtracting.
Before adding or subtracting two fractions they are converted into like fractions Explain with examples why this is necessary?
Before adding or subtracting two fractions they are converted into like fractions. Explain with examples why this is necessary.
Why is it important to simplify radical expressions before subtracting or adding and how is adding a radical expression similar to adding a polynomial expression and provide an example?
Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify..
Before adding or subtracting Why are fractions turned into like fractions?
They have to have the same denominator.
What are the Rules of adding and subtracting dissimilar fractions?
If their denominators are different then find their lowest common denominator by means of their lowest common multiple remembering to adjust their numerators accordingly before adding or subtracting.
Can you name all the math equations?
No, it is literally impossible. An equations is a question with a series of numbers which communicate by dividing, subtracting, adding, or multiplying. If we have no end to these numbers, there is an endless wave of equations coming at us, using the new number, and the infinite number before it, and after it.
Why do you change mixed numbers to improper fractions before multiplying and dividing?
Because common denominators allow adding and subtracting of numerators. Improper fractions also have simplified rules over mixed numbers when performing multiplication and division.
What must you do first before adding or subtracting unlike fractions?
you must make the fractions equivalent and with the same denomenator
What is the key of adding and subtracting decimals?
The key would be to add (00.) before your decimal. IE 00.41 + 00.95 = 01.36
Why do fractions need a common denominator before you add or subtract?
Because the answers will be wrong when adding or subtracting them if they don't have a common denominator.
Why do fractions need to have a common denominator before subtracting or adding?
Because if there's no common denominator it'll be hard to simplify. And will cause you to get a headache.
Why is it helpful to estimate the answer before adding or subtracting decimals?
It can be helpful for people who do not have a clue where the decimal point should go in the answer. For those who do know, the exercise is pointless.
