What is 28/100 + 8/10?
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This is how to add
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Step 1We have to make sure the denominators are equal. Since 10 is evenly divided by 100, we can multiply just one term to get a common denominator. Multiply 8 by 10, and get 80, then we multiply 10 by 10 and get 100. The problem now has new fractions to add:
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Step 2Since our denominators match, we can add the numerators. 28 + 80 = 108 This yields the answer
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Step 3The last step is to reduce the fraction if we can. To find out, we try dividing it by 2... Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:
So far so good... let's try to divide by that number again. Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:
So far so good... let's try to divide by that number again. No good. So next you try the next prime number, which is 3... No good. So next you try the next prime number, which is 5... No good. So next you try the next prime number, which is 7... No good. So next you try the next prime number, which is 11... No good. So next you try the next prime number, which is 13... No good. So next you try the next prime number, which is 17... No good. So next you try the next prime number, which is 19... No good. So next you try the next prime number, which is 23... No good. So next you try the next prime number, which is 29... No good. 29 is larger than 27. So we're done reducing. And we're done! Here's the final answer to 28/100 + 8/10
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