Answer all the questions below and press submit to see how many you got right.
Denominator : The denominator of a fraction $\frac{a}{b}$ is the number $b$ below the fraction bar.
Fraction : A fraction is a number that can be written as $\frac{a}{b}$ with an integer $a$ and a natural numbers $b.$ A fraction $\frac{a}{b}$ is the result of the division $a\div b.$ Examples of fractions are $\frac{1}{2}, -\frac{2}{3}$ and $\frac{3}{2}.$
Numerator : The numerator of a fraction $\frac{a}{b}$ is the number $a$ above the fraction bar.
Subtraction : Subtraction is the mathematical operation that describes decreasing a number by an amount equal to a second number. The mathematical symbol for subtraction is the minus sign $-.$ The term subtraction is also used for a generalization of this basic operation on numbers to functions, vectors and matrices.
$\frac{9}{12}-\frac{5}{12}=\frac{?}{12}?$
Reduced fraction : A reduced fraction (or simplified fraction or fraction in simplified form or fraction in simplest form) is a fraction $\frac{a}{b}$ such that $a$ and $b$ do not have any common factors bigger than 1. For example the reduced fraction of the fraction $\frac{4}{6}$ is $\frac{2}{3}.$
What is $\frac{6}{18}-\frac{2}{18}$ as a reduced fraction a/b?
Addition : Addition is the mathematical operation that describes increasing a number by an amount equal to a second number. The mathematical symbol for addition is the plus sign $+.$ The term addition is also used for a generalization of this basic operation on numbers to functions, vectors and matrices.
$\frac{2}{12}+\frac{1}{12}=\frac{?}{12}?$