Math

How to use this category

Math pages do one algebraic job cleanly. Percentages can find a part, a rate, or a change by a percent. Percentage change is separate so percentage points are not confused with relative change. Fractions simplify. Ratios share an amount. Roots, powers, logs, quadratics, slopes, circles, triangles, sig figs, scientific notation, factors, and half-life each keep their own steps. The square-root grading curve is not in this list. It lives with the school tools because the question is a grade, not a root. When only a principal root is needed, open the square-root calculator on this shelf and leave the curve page alone. Probability counting tools such as combinations sit next door when the question is how many ways rather than how a sample behaved.

The math shelf is for clean algebra with the steps written as operations, not as advice. Percentage of, percent as a rate, and a percent increase live together because shoppers ask all three, and the page makes you pick which question you mean. Percentage change is separate so that a move from 10 percent to 15 percent can be shown both as a relative change and as five percentage points. Fractions reduce by the Euclidean algorithm and show the mixed number. Ratios share a total. Roots, powers, and logs state the cases they refuse, including a negative base to a fractional power. Quadratics, slopes, circles, and triangles each draw the quantity the formula names. Significant figures keep a text field so trailing zeros are not eaten by a number box. Half-life can be asked forward or backward. Modulo, combinations, and permutations sit nearby when the job is counting or remainders rather than a sample summary. Scientific notation is for huge and tiny counts that a plain decimal buries. None of these pages grades a test. The square-root curve does that, and it lives with school. Open a math page when the question is algebraic identity; leave when the question is a gradebook, a loan, or a lab summary that already has its own shelf.

The cards above are the whole category, with one sentence on the job each page actually does. Open a page when that sentence matches the decision in front of you. If the sentence is close but the assumption is wrong, read the comparison section on the page before you copy a number into a report, a bid, or a lesson plan.

Worked examples are prefilled so the first result is auditable. Change one input and the ticket updates. The essay under the ticket walks the same arithmetic in sentences, then a second example, then the move that most often breaks the definition. Five questions at the end answer the objections a careful reader raises after seeing the figure. That structure is repeated because the habit of checking is the point, not because the formulas are the same.

Internal links leave this category only when the next formula genuinely lives next door. A standard deviation page may point at variance and at a t test. It should not point at a decking calculator. If you arrived from search on a broad word, use the one-sentence descriptions to discard the near misses. Near misses are how people report a p-value from a test they did not run.

Each worksheet in Math keeps one H1, a canonical URL that matches the tool name, and meta text sized for search snippets. The steps are part of the page, not a hidden modal. If you teach from these pages, project the ticket and the assumptions together so students see the same definition you graded against.

When two tools in Math look alike, read the blurb under each name before you commit. The difference is usually a divisor, a critical value, a waste percent, or a caution that belongs on one page and not the other. That difference is why the URLs stay separate.

Reviewed 21-10-2026. Pages in Math currently include Area of Circle Calculator, Circumference Calculator, Exponent Calculator, Fraction Calculator, Logarithm Calculator, Percentage Change Calculator, Pythagorean Theorem Calculator, Scientific Notation Calculator, Significant Figures Calculator, Slope Calculator, Square Root Calculator, Volume Calculator.

Math pages stay short on purpose: one identity, one unknown, printed steps. Percentage rearrangements, roots, and right-triangle sides are the core set here. A grading curve that uses a square root still belongs with school tools, because the question is a mark, not a radical. Keep units in the sentence you publish, and open the worksheet rather than estimating from memory when the figure will be checked.

Every math page

• Area of Circle Calculator Circle area from radius or diameter using A = πr².
• Circumference Calculator Circumference and area of a circle from radius or diameter.
• Exponent Calculator Evaluates base^exponent for real bases and integer or real exponents where defined.
• Fraction Calculator Adds, subtracts, multiplies, or divides two fractions and reduces the result.
• Logarithm Calculator Log of a positive number in base 10, e, 2, or a custom base.
• Percentage Change Calculator Relative percent change from an old value to a new value, plus the percentage-point gap.
• Pythagorean Theorem Calculator Solves for a missing side of a right triangle from the other two sides.
• Scientific Notation Calculator Converts between decimal form and a × 10^b scientific notation.
• Significant Figures Calculator Counts significant figures in a number and rounds to a chosen sig-fig count.
• Slope Calculator Slope of a line through two points, with rise, run, and intercept options.
• Square Root Calculator Principal square root of a non-negative number, with optional n-th root.
• Volume Calculator Volume of a box, cylinder, or sphere from the dimensions you enter.