Free tools. Clear answers. Everyday math,
Everyday math,
made clear.
Calculators, worksheets, and games. Get the answer and understand the steps.
A little clarity
What is 15% of 80?
12That’s your answer.12 of 80 squares. Same idea, made visible.
No sign-upSteps includedMade for everyday use
Pick up where you left off
A good place to start
All calculators Small questions. Useful answers.
Everyday calculators, with the working included.
Percentage Calculator Percent of a number, changes, and reverse percentages. Fraction Calculator Add, subtract, multiply, and divide fractions. Discount Calculator Work out sale prices and savings. Compound Interest Calculator See how savings grow over time. Age Calculator Your age in years, months, and days. Days Between Dates Calculator Count the days between two dates.
See how it works.
A few tools that make the idea easier to see.
One step at a time
Square roots, explained.
Follow the working from the first guess to the answer.
Explore the steps ↗ Change it. See it.Find your wavelength.
Combine waves and watch the patterns take shape.
Try the wave generator ↗ A little number playFour numbers. One challenge.
Use every number once to make 24. How long can you keep going?
Play Make 24 ↗For the next “I get it”A little practice
A little practice
goes a long way.
Ready-made sheets or a fresh set of questions. Answer keys included.