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To add two fractions, you must first convert them to a common denominator, which is the Least Common Multiple of the denominators of the two fractions you're adding. For example, to add 5/6 and 1/8, you convert them to the common denominator LCM(6,8)=24. Then 5/6=20/24 and 1/8=3/24 so the sum is 23/24.
To multiply two fractions, you multiply the numerators together and multiply the denominators together. Thus, 5/6 * 1/8 = (5*1)/(6*8) = 5/48.
If both fractions are between 0 and 1, then the sum will always be greater than the product.
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How do you know 72 80th is greater than 7 8th?
To compare 2 fractions you must make the denominator the same. We can do this in this problem by multiplying 7 and 8 by 10. This gives us 70 80ths. Now we can compare the 2 fractions and see that 72 80ths is bigger.
How do you compare dissimilar fractions compare the numerator?
Two ways: convert them to decimals or convert them to similar fractions and compare the numerators.
Is it always necessary to find the least common denominator to compare the sizes of fractions?
It is not always necessary to find the least common denominator to compare the sizes of fractions. When comparing fractions with the same denominator, you can simply compare the numerators. If the denominators are different, you can find a common denominator by multiplying the denominators together, but it is not always required for comparison. Alternatively, you can convert the fractions to decimals for easier comparison in some cases.
How do you equal fractions?
To compare fractions, convert both of them to a common denominator.
How do you compare and contrast pyramids and prisms?
To compare them you find characteristics that they share. To contrast them you find characteristics that they do not share.
