Arithmetic

Fractions, primes, significant figures, and scientific notation

Arithmetic solvers from AI-Math are free online arithmetic calculators and homework helpers covering fractions, primes, significant figures, and scientific notation. Type a problem or upload an image and the AI returns a clear, step-by-step solution — perfect for arithmetic homework, exam prep, or self-study from middle school through college. No signup needed; pick a specific topic below to launch its dedicated solver.

Add and Subtract Fractions Calculator

Add or subtract fractions with like or unlike denominators, including mixed numbers. AI-Math finds the LCD and shows every step, including the borrowing.

Adding Mixed Fractions Calculator - Step by Step

Add mixed fractions and mixed numbers with unlike denominators. AI-Math shows the improper conversion, the common denominator and the carry, step by step.

Math Formula Calculator - Substitute and Rearrange

Plug numbers into any maths formula, rearrange it to solve for a different letter, and handle formulas with fractions. Step-by-step working from AI-Math.

Fraction Calculator - Solve Fractions Step by Step

Free fraction calculator from AI-Math. Add, subtract, multiply, divide and simplify fractions with clear step-by-step solutions and worked examples.

Multiply & Divide Fractions Calculator

Multiply and divide fractions, mixed numbers and whole numbers. Free step-by-step calculator showing every cancellation and reciprocal, from AI-Math.

Prime Number Checker — Is Your Number Prime?

Check whether any number is prime or composite instantly. AI-Math shows the divisibility test step by step, including which divisors you actually need to try.

Simplify Fractions Calculator - Simplest Form

Reduce any fraction to its simplest form. Free step-by-step simplify fractions calculator that shows the GCF at every stage, from AI-Math.

Online Scientific Calculator — Free, No Download

A free online scientific calculator for powers, roots, logs, trig and fractions — with AI-Math showing the working behind every answer instead of just a number.

Scientific Notation Converter and Calculator

Convert numbers to and from scientific notation, then add, multiply and compare them. The rules explained with worked steps and real measurements.

Significant Figures Calculator - Sig Fig Steps

Count and round significant figures and apply sig fig rules to addition, subtraction, multiplication and division. Free step-by-step tool from AI-Math.

Solve for X Calculator — Step by Step

Find x in one-step, two-step and multi-step equations. AI-Math combines like terms, undoes each operation in order, and checks the answer for you.

Square Root Calculator with Chart 1 to 100

Simplify or evaluate any square root step by step, with the rules for radicals and a perfect-square chart from 1 to 100 you can read straight off the page.

Texas Instruments Online Calculator - Free Scientific Calculator

A free online scientific calculator that covers the same functions as a TI-30X or TI-84: powers, roots, logs, trig, scientific notation and fractions.

Vector Addition Calculator - Add Vectors Step by Step

Add and subtract vectors in component form or as magnitude and direction, in 2D or 3D. AI-Math shows the resultant, its magnitude and its angle step by step.