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It is easier to multiply or divide fractions than to add or subtract fractions because in multiplication, you just have to multiply the numerator by the numerator and the denominator by the denominator. Same applies with division of fractions, except that you have to reciprocate the fraction you're dividing with (divisor) then proceed to multiplication.

Whereas, in addition and subtraction of fractions, you still have to get their Least Common Denominator (LCD).

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โˆ™ 2012-07-10 01:03:14
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Q: When doing fractions why is it easier to multiply and divide fractions than add and substract fractions?
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Related questions

Why is multiply and divide fractions is important?

because it is easier than adding and subtracting so many times??

How do you multiply decimals with fractions?

Change the decimal into a fraction or the easier way is to turn the fration into a decimal, then multiply.

Why do you not use common denominators while multiplying fractions?

probably to multiply easier

Why do you flip fractions?

So its easier to add subtract or most commonly multiply

Do you need common denominators when subtracting fractions?

Yes. You need common denominators if you want to:Add fractionsSubtract fractionsCompare fractions ("which is larger?")You do not need common denominators to multiply or divide fractions. Thus, in the case of fractions, multiplication and division is actually easier than addition and subtraction.

Why is it that we don't divide on a dividing fraction?

It's easier to multiply the reciprocal.

Why is it that when solving a dividing fractions problem no actual dividing happens?

It's easier to multiply the reciprocal.

What number could you use to divide by seven?

You could multiply by 0.142857 with the underlined string repeating. However, it is easier to divide by 7.

Is fractions easier or decimal?

Some people find rational fractions easier, others prefer decimals fractions. For some purposes rational fractions are simpler, for others decimals are easier. So there is no simple answer.

How do you work out 2 percent of something?

2% of something means 2/100ths of it. Divide by 100 and then multiply by 2. You can also multiply by 2 then divide by 100, or even divide by 50, if that's easier, because 2/100 = 1/50.

Why do you switch the numbers around when dividing fractions?

you switch the second fraction around ( multiply by the reciprocal ) because it is way easier than trying to actually divide the fraction by dividing, you get the same answer. but we multiply by the recipricol because multiplying fractions is simpler. example.... 4/6 divided by 8/5 you then get 4/6 * 5/8 = 5/12

Why convert mix number to improper fraction when multiplying mix number?

It's much easier to multiply fractions than it is to multiply mixed numbers. Try either one some time.

Why would it be easier if all Americans used the metric system for dosage calculations?

Because it keeps you from having to divide, multiply, and subtract

What is 13 over 50 as a percentage?

The way to determine it is to divide 13 by 50 and then multiply by 100. In this case it is easier to multiply both by 2 and it gives you 26 over 100, which is 26 percent.

Why is it it easier to convert meters to millimeters or centimeters than it is to change yards to feet or inches?

Some people think it is easier to multiply and divide by powers of ten than by 3, 12 or 36.

Why you need more than one coordinate system?

That is because - for example - some calculations are easier in polar coordinates, and some are easier in rectangular coordinates. For example, complex numbers are easier to add and subtract in rectangular coordinates, and easier to multiply and divide in polar coordinates.

What is the easiest way to understand the equivalent fractions worksheets?

The difference is that they equivalent fractions worksheets have graphics and explain the concepts in easier to understand language. I find them to be an easier and fun way to introduce and explain fractions.

What is 3 and 2 eights times 6 and four sevenths?

this is simple. for the multiplication of fractions, you multiply both the Numerator and denominator straight across. first change the mixed numbers to improper fractions 3 2/8---- 26/8 6 4/7---- 46/7 multiply them to get... whatever... and simplify it. if your teacher wants it in mixed number form then do so but it is easier to keep fractions as improper fractions for this reason

When finding volume do you need improper fractions or mixed numbers?

To find a volume you usually need to multiply values together. When working with mixed numbers it is usually easier to convert them into improper fractions, do the calculations and convert any resulting improper fraction into a mixed number. So you don't need to use either format, it's just that improper fractions are easier to manipulate.

Why do you use lowest terms in fractions?

Because it is much easier to do further calculations when you have smaller fractions.

How do accountants use fractions?

Accountants typically convert fractions to decimals. They do this by dividing the fractions and getting a decimal number. Decimals are easier to work with in accounting.

Is slope intercept form allowed to be in decimals?

yes, but it is a lot easier if you keep it in fractions (easier to graph) mind you, standard form doesn't allow fractions.

What makes percent easier than fractions?

Percentages are easier for some purposes, harder for other.

How do you multiply disimilar fractions?

To multiply two fractions, the numerator (top part) of the result is the product of the numerators, and the denominator (bottom part) of the result is the product of the denominators. There is no need to convert to a common denominator first; this is only necessary to add, subtract, or compare fractions. For example, 1/2 x 5/7 = (1x5) / (2x7) = 5/14. Note that it is easier to do any simplifications BEFORE doing the actual multiplication.

How is cooking pizza related to fractions?

Well, if you divide a pizza, you get a fraction of the pizza. This makes fractions easier to understand. or the peices you cut and take away one that is a fraction so an example is i have a pizza its cut into 7 pieces so i take away one i have 6/1

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