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## Probability

Probability is such an innate part of your life that you rarely think about it. However, every time you use a word like “might,” “may,” “undoubtedly,” “without fail,” or “maybe,” you are voicing a pro ...

## CK-12 Middle School Math Concepts - Grade ? At grade

presents topics including algebraic thinking, patterns, decimals, decimal operations, fractions, fraction operations, integers, integer operations, ratios, rates, proportions, percents, percent applic ...

## Sum and subtraction of fractions

The sum of two fractions with equal denominators is a new fraction with the same denominator and the numerator with the sum of the numerators. To subtract fractions we proceed in the same way: keep th ...

## Dividing fractions

You'll learn multiply and divide fractions, and the basic properties of these operations. So you can understand the meaning of equivalent fractions and from there define the different classes of e ...