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MathMammoth

Percent Play

Learn all the basics of percent: what is percent, percentages into decimals, calculate percentages, discounts, sales tax, percent of change, and percent of comparison.

Fractions - add and subtract Play

We start by converting mixed numbers to fractions and vice versa. Then, we add & subtract like fractions, and next add & subtract mixed numbers with like fractional parts. Then it is time to learn equivalent fractions in preparation to adding unlike fractions. Next, we add & subtract unlike fractions, and lastly we learn to compare fractions

Fractions - multiply & divide, and more Play

First, we learn about simplifying fractions. Then come various topics about fraction multiplication: multiplying fractions by whole numbers, or by fractions, or multiplying mixed numbers. One video is about area and fraction multiplication. Lastly, fraction division topics: divide fractions mentally, or using the rule (involving reciprocal numbers).
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