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Grammar and Correct Usage Practice Test 2

This is the second part of the Grammar and Correct Usage practice tests series. In each sentence, identify the error in punctuation, grammar, and usage. 1. Paul Erdos was a mathematician who writes a...

How to Add Fractions

Fractions whose denominators are the same are called similar fractions. Fractions that are not similar are called dissimilar fractions. Hence, the fractions , , and are similar fractions, while the fractions and are dissimilar...

How to Get the Least Common Multiple of Numbers

In mathematics, a multiple is a product of any number and an integer. The numbers 16, -48 and 72 are multiples of 8 because 8 x 2 = 16, 8 x -3 = -48 and...

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