Middle School · Page 2
Practice one-variable equations, proportional functions, square roots, expansion, factorization and two-draw probabilities with worked steps.
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Geometry
Rectangle from Area and Perimeter
Learning & Education · Middle SchoolRecover a rectangle’s two side lengths from its area and perimeter. Detect impossible measurements and the square boundary, with a dimensioned outline.
Open calculator ↗Height from Shadows Calculator
Learning & Education · Middle School · High School · Construction & DIYEstimate an object’s height from its shadow and a reference object measured at the same time. Mix length units and see the similar-triangle proportion.
Open calculator ↗Parallel Lines and Angles Calculator
Learning & Education · Middle SchoolFind all eight angles made by a transversal crossing two parallel lines. Select the known numbered angle and compare equal and supplementary angle groups.
Open calculator ↗Coordinate Transformation Calculator
Learning & Education · Middle School · High SchoolReflect, rotate or translate a point in the coordinate plane. Keep exact fractional coordinates and compare the original point with its image on equal-scale axes.
Open calculator ↗Mathematics
Radical Arithmetic Calculator
Learning & Education · Middle SchoolAdd, subtract, multiply or divide two real radical terms. Simplify square factors, combine matching radicals and rationalize a radical denominator.
Open calculator ↗Repeating Decimal Calculator
Learning & Education · Middle SchoolConvert a repeating decimal block to an exact fraction, or find a fraction’s terminating prefix and complete repeating cycle.
Open calculator ↗Integer Quotient and Remainder Calculator
Learning & Education · Middle SchoolDivide signed integers with a nonnegative remainder. Verify the identity and use the same modulo convention for cyclic positions and clock arithmetic.
Open calculator ↗Measurement Interval Calculator
Learning & Education · Middle SchoolPropagate absolute measurement bounds through addition, subtraction, multiplication or division. See a guaranteed enclosing interval rather than a statistical confidence interval.
Open calculator ↗Meeting and Catch-Up Calculator
Learning & Education · Middle School · Time & Planning · Sports & FitnessFind when two travelers meet or one catches the other at constant speed. Choose directions, mix speed units and compare signed positions over time.
Open calculator ↗Absolute Value Equation and Inequality Calculator
Learning & Education · Middle School · High SchoolSolve |ax+b|=c or an absolute-value inequality. See exact fractional boundaries, the inside or outside solution and a number line with endpoint rules.
Open calculator ↗Set Operations and Venn Diagram
Learning & Education · Middle School · High SchoolFind the union, intersection, difference, symmetric difference or complement of two finite sets. Compare the element lists, counts and highlighted Venn regions.
Open calculator ↗Order of Operations Calculator
Learning & Education · Middle School · High SchoolEvaluate a numeric expression with parentheses, powers and the four arithmetic operations. Follow the actual evaluation order and keep an exact fraction answer.
Open calculator ↗Linear and Quadratic Inequality Calculator
Learning & Education · Middle School · High SchoolSolve a linear or quadratic inequality against zero. See the solution intervals, open or closed endpoints, a sign chart and a number line.
Open calculator ↗Quadratic Function Maximum and Minimum
Learning & Education · Middle School · High SchoolFind the maximum and minimum of ax²+bx+c on an entered closed interval. Compare both endpoints and the vertex, with a graph and candidate table.
Open calculator ↗Linear Equation Calculator
Learning & Education · Middle SchoolSolve ax+b=cx+d with whole numbers, decimals or fractions. Follow the same operation on both sides and check the answer by substitution.
Open calculator ↗Direct and Inverse Proportion Calculator
Learning & Education · Middle SchoolUse one known x,y pair to find the constant of direct or inverse proportion, calculate another y and compare a value table with the graph.
Open calculator ↗Square Root Simplifier
Learning & Education · Middle SchoolSimplify a real square root into a√b, with prime-factor pairs and a decimal check. Distinguish the principal square root from both solutions of x²=n.
Open calculator ↗Expansion and Factorization Calculator
Learning & Education · Middle SchoolExpand (ax+b)(cx+d) using four products, or factor a monic quadratic x²+Bx+C over the integers. See how the middle terms combine.
Open calculator ↗Two-Draw Probability Calculator
Learning & Education · Middle SchoolCalculate a two-draw color event with or without replacement. Follow a probability tree, multiply along each path and add the matching outcomes.
Open calculator ↗Statistics
Expected Value Calculator
Learning & Education · Middle School · High SchoolEnter discrete outcomes and their probabilities to calculate expected value, net expectation after a fixed cost and outcome spread.
Open calculator ↗Grouped Frequency Calculator
Learning & Education · Middle School · High SchoolBuild a frequency table from class intervals and counts. Find relative and cumulative frequencies, a midpoint mean estimate and a histogram that supports unequal class widths.
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