7 calculators
Math calculators
Everyday math, with an explanation of how to get the answer.
- Percentage X% of Y, change, increase, discount
- Proportion (rule of three) Direct and inverse proportion
- Fractions Arithmetic with simplified result
- Mean and standard deviation Mean, median, mode, std. deviation
- Quadratic equation Quadratic formula and roots
- LCM and GCD Least multiple, greatest divisor
- Area of shapes Rectangle, triangle, circle, trapezoid