Common Questions
How do I find the GCF of two numbers?
Enter both numbers in our GCF calculator. It shows the prime factorization of each number and identifies the greatest common factor. Example: GCF(48, 18) = 6.
How do I simplify a fraction?
Divide both numerator and denominator by their GCF. Our fraction calculator does this automatically and shows every step of the simplification.
What is MMXXIV in numbers?
MMXXIV = 2024. MM = 2000, XX = 20, IV = 4. Use our Roman numeral converter to convert any number instantly.
What is 15% of 200?
15% of 200 = 30. The formula is (15 ÷ 100) × 200 = 30. Use our percentage calculator for any percentage problem.
What is the difference between GCF and LCM?
GCF is the largest number that divides evenly into all given numbers. LCM is the smallest number all given numbers divide into evenly. They are related by: GCF(a,b) × LCM(a,b) = a × b.
How do I add fractions with different denominators?
Find the LCD of both fractions, convert each to an equivalent fraction with that denominator, then add the numerators. Example: 1/2 + 1/3 → LCD = 6 → 3/6 + 2/6 = 5/6. Our fraction calculator shows every step.
What does PEMDAS stand for?
PEMDAS stands for Parentheses, Exponents, Multiplication, Division, Addition, Subtraction — the correct order of operations. In the UK it is called BODMAS. Use our PEMDAS calculator to evaluate any expression step-by-step.
How does the quadratic formula work?
The formula x = (−b ± √(b²−4ac)) / (2a) solves any equation in the form ax² + bx + c = 0. The discriminant (b²−4ac) determines the number of real roots: positive = 2 roots, zero = 1 root, negative = complex roots. Try our quadratic solver.