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              |  Rational numbers  |  | 
|  Identifying rational and irrational numbers  |   | 
|  Simplifying fractions  |   | 
|  Lowest common denominator  |   | 
|  Rounding mixed numbers  |   | 
|  Absolute value of rational numbers  |   | 
|  Converting decimals to fractions  |   | 
|  Converting fractions (denominator is a power of ten) to decimals  |   | 
|  Converting fractions to decimals  |   | 
|  Repeating decimals  |   | 
|  Comparing fractions  |   | 
|  Ordering fractions  |   | 
|  Adding and subtracting fractions with like denominators  |   | 
|  Adding fractions with different denominators  |   | 
|  Adding mixed numbers with different denominators  |   | 
|  Subtracting fractions with different denominators  |   | 
|  Subtracting mixed numbers with different denominators  |   | 
|  Adding and subtracting fractions: word problems  |   | 
|  Reciprocals and multiplicative inverses  |   | 
|  Finding a fraction of a whole number  |   | 
|  Multiplying fractions  |   | 
|  Dividing fractions  |   | 
|  Mixed operations involving fractions  |   | 
|  Multiplying and dividing fractions: word problems  |   | 
|  Mixed operations involving rational numbers  |   |