Math Vocabulary Flashcards
Free math vocabulary flashcards with plain definitions of the words that show up in word problems and tests: number terms, operations, algebra terms, data terms and measurement terms. Flip each card and drill the words you miss.
Keys: Space or Enter flips, arrow keys move, K marks known, R marks review. No sign-up and nothing is stored.
How to study with these math vocabulary flashcards
- Read the front of the card and say or write your answer before you flip it.
- Flip the card, then mark I know this only if you were right without hesitating.
- Mark Review again for anything you missed, then use Review missed only to drill those cards.
- Pick one topic at a time, then shuffle all topics for a mixed review.
All 56 cards at a glance
Every card is also listed below so you can scan, print or review without the viewer.
Number and operation words
| Question | Answer |
|---|---|
| Sum? | The result of addition. |
| Difference? | The result of subtraction. |
| Product? | The result of multiplication. |
| Quotient? | The result of division. |
| Factor? | A number that divides another number exactly. 3 is a factor of 12. |
| Multiple? | The product of a number and a whole number. 12 is a multiple of 3. |
| Prime number? | A whole number greater than 1 with exactly two factors, 1 and itself. |
| Composite number? | A whole number greater than 1 with more than two factors. |
| Greatest common factor (GCF)? | The largest number that divides two or more numbers exactly. |
| Least common multiple (LCM)? | The smallest positive number that is a multiple of two or more numbers. |
| Integer? | A whole number, its opposite or zero: …, −2, −1, 0, 1, 2, … |
| Rational number? | A number that can be written as a fraction a/b with b not zero. |
| Irrational number? | A number that cannot be written as a fraction, such as π or √2. |
| Absolute value? | The distance of a number from zero. |
| Reciprocal? | The number that gives 1 when multiplied by the original: the reciprocal of 3/4 is 4/3. |
Algebra words
| Question | Answer |
|---|---|
| Variable? | A letter that stands for an unknown or changing number. |
| Constant? | A fixed value that does not change. |
| Coefficient? | The number multiplied by a variable. In 5x, the coefficient is 5. |
| Expression? | A mathematical phrase with numbers, variables and operations but no equal sign. |
| Equation? | A statement that two expressions are equal. |
| Inequality? | A statement comparing two expressions with <, >, ≤ or ≥. |
| Term? | A number, a variable or a product of them in an expression. |
| Like terms? | Terms with the same variable part, such as 3x and 7x. |
| Exponent? | A number that tells how many times to multiply the base by itself. |
| Slope? | The steepness of a line: rise over run. |
| Intercept? | A point where a graph crosses an axis. |
| Function? | A rule that gives exactly one output for each input. |
| Domain and range? | Domain is the set of inputs; range is the set of outputs. |
| Quadratic? | A polynomial of degree 2, such as x² + 3x + 2. |
| Solution? | A value that makes an equation or inequality true. |
Data and probability words
| Question | Answer |
|---|---|
| Mean? | The sum of the values divided by their count. |
| Median? | The middle value when data are in order. |
| Mode? | The most frequent value. |
| Range? | Maximum minus minimum. |
| Outlier? | A value far from the rest of the data. |
| Probability? | A number from 0 to 1 that measures how likely an event is. |
| Sample space? | The set of all possible outcomes. |
| Independent events? | Events where one outcome does not change the probability of the other. |
| Ratio? | A comparison of two quantities. |
| Proportion? | An equation stating that two ratios are equal. |
| Rate? | A ratio comparing quantities with different units, such as miles per hour. |
| Percent? | A ratio out of 100. |
Measurement words
| Question | Answer |
|---|---|
| Perimeter? | The distance around a shape. |
| Area? | The amount of surface inside a shape, in square units. |
| Volume? | The amount of space inside a solid, in cubic units. |
| Circumference? | The distance around a circle. |
| Diameter? | A segment across a circle through its center. |
| Radius? | A segment from the center of a circle to its edge. |
| Angle? | Two rays that share an endpoint, measured in degrees. |
| Parallel? | Lines in a plane that never meet. |
| Perpendicular? | Lines that meet at a right angle. |
| Congruent? | Having the same size and shape. |
| Symmetry? | A property of a shape that matches itself after a flip or turn. |
| Estimate? | An approximate answer. |
| Evaluate? | Find the value of an expression. |
| Simplify? | Rewrite an expression in its simplest form. |
Frequently asked questions
Why does math vocabulary matter?
Word problems and test questions use specific terms, so misreading a word such as product or difference leads to the wrong operation.
How do I remember sum, difference, product and quotient?
Link each to its operation: sum is addition, difference is subtraction, product is multiplication and quotient is division.
Sources
More free math flashcards
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