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Math Topics
Prealgebra
Fractions
1
Introduction to Fractions
Mini Lecture
Identify the numerator and the denominator.
\(\dfrac{2}{5}\)
\(\dfrac{7}{3}\)
Write each as an equivalent fraction with denominator \(6\)
\(\dfrac{2}{3}\)
\(\dfrac{55}{66}\)
Find a fraction equivalent to \(\dfrac{3}{4}\) with denominator \(12x\)
Fill in the black: \(\dfrac{7}{11}=\dfrac{5,761}{~}\)
2
Prime Numbers, Factors, and Reducing to Lowest Terms
3
Multiplication with Fractions, and the Area of a Triangle
Mini Lecture
Multiply and simplify.
\(\dfrac{9}{20}\cdot\dfrac{4}{3}\)
\(\dfrac{3}{4}\cdot 12\)
\(\dfrac{a^2b}{c}\cdot\dfrac{c^3}{ab^2}\)
\(\left(\dfrac{1}{2}\right)^2\cdot 8+\left(\dfrac{1}{3}\right)^2\cdot 9\)
Find \(\dfrac{1}{3}\) of the sum of \(8\) and \(4\).
Find the area of the shape.
4
Division with Fractions
Mini Lecture
Divide. Write answers in lowest terms.
\(\dfrac{25}{46}\div\dfrac{40}{69}\)
\(20\div\dfrac{1}{10}\)
\(\dfrac{x^2}{y^3}\div\dfrac{x}{y^2}\)
\(10\div\left(\dfrac{1}{2}\right)^2\)
Simplify \(10+\dfrac{11}{12}\div\dfrac{11}{24}\)
Find the quotient of \(18\) and \(\dfrac{3}{5}\) is increased by \(10\)
5
Addition and Subtraction with Fractions
Find the LCD for the fractions, then write each fraction as an equivalent fraction with the LCD. Then write them in order from smallest to largest.
\(\displaystyle\frac{5}{8}\qquad \displaystyle\frac{5}{16}\qquad \displaystyle\frac{3}{4}\qquad \displaystyle\frac{1}{2}\)
6
Operations with Mixed Numbers
7
Order of Operations and Complex Fractions
Mini Lecture
Simplify.
\(\left(\dfrac{3}{5}+\dfrac{1}{10}\right)\left(\dfrac{1}{2}+\dfrac{3}{4}\right)\)
\(2\dfrac{3}{8}+\dfrac{1}{2}\left(\dfrac{1}{3}+\dfrac{5}{3}\right)^3\)
\(\dfrac{\frac{2}{3}}{\frac{3}{4}}\)
\(\dfrac{\frac{1}{3}+\frac{3}{4}}{2-\frac{1}{6}}\)