Evaluate
2.5
Factor
\frac{5}{2} = 2\frac{1}{2} = 2.5
Quiz
Arithmetic
5 problems similar to:
3.3 \times \frac { 1 } { 4 } + 0.25 \times 6 \frac { 7 } { 10 }
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\frac{33}{10}\times \frac{1}{4}+0.25\times \frac{6\times 10+7}{10}
Convert decimal number 3.3 to fraction \frac{33}{10}.
\frac{33\times 1}{10\times 4}+0.25\times \frac{6\times 10+7}{10}
Multiply \frac{33}{10} times \frac{1}{4} by multiplying numerator times numerator and denominator times denominator.
\frac{33}{40}+0.25\times \frac{6\times 10+7}{10}
Do the multiplications in the fraction \frac{33\times 1}{10\times 4}.
\frac{33}{40}+0.25\times \frac{60+7}{10}
Multiply 6 and 10 to get 60.
\frac{33}{40}+0.25\times \frac{67}{10}
Add 60 and 7 to get 67.
\frac{33}{40}+\frac{1}{4}\times \frac{67}{10}
Convert decimal number 0.25 to fraction \frac{25}{100}. Reduce the fraction \frac{25}{100} to lowest terms by extracting and canceling out 25.
\frac{33}{40}+\frac{1\times 67}{4\times 10}
Multiply \frac{1}{4} times \frac{67}{10} by multiplying numerator times numerator and denominator times denominator.
\frac{33}{40}+\frac{67}{40}
Do the multiplications in the fraction \frac{1\times 67}{4\times 10}.
\frac{33+67}{40}
Since \frac{33}{40} and \frac{67}{40} have the same denominator, add them by adding their numerators.
\frac{100}{40}
Add 33 and 67 to get 100.
\frac{5}{2}
Reduce the fraction \frac{100}{40} to lowest terms by extracting and canceling out 20.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}