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Important Math Facts

Subject : math
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Two angles are ___________ if the sum of their measures is 90°.






2. The symbol < is read as ________ .






3. An ________ is a mathematical sentence that contains the equal sign.






4. To ___________ - multiply the numerators and then multiply the denominators. Write the product in lowest terms.






5. The symbol ______ means percent.






6. ___________ is a number that can be written using an exponent. For example - 3² means three to the second power.






7. Prime factorization can be written using ________ . For example - 2 x 2 x 3 = 2² x 3






8. The ___________ of a circle is equal to π times its diameter or π times twice its radius. C = π d or C = 2 π r.






9. The symbol ≥ is read as ______________.






10. The ______________ are the numbers of pieces of data that can represent the whole set of data. These common measures of central tendency are mean - median - and mode.






11. To express a ______ as ________a - express the percent as a fraction with a denominator of 100 - then simplify.






12. ______________ are two events in which either one or the other must take place - but they cannot both happen at the same time. The sum of their probabilities is one.






13. The set of all possible outcomes is _____________.






14. The surface area of a __________ is the sum of the areas of two circles and a rectangle.






15. A _________ has six rectangular faces. To find the surface area - find the sum of the areas of the six faces.






16. Both addition and multiplication are __________ . This means that grouping addends or factors will not change the sum or product.






17. An ___________ is a combination of numbers - variables - and operations.






18. Together - the x coordinate and y coordinate form an ___________.






19. To _________ - write the mixed numbers as improper fractions. Replace the divisor with its reciprocal and multiply.






20. A ___________ is a transformation that turns a line or shape around a fixed point.






21. _________ - _________ - and_______may be written by first writing each one as a fraction with a denominator of 100.






22. A _________ is an equation that shows two ratios are equivalent.






23. A _______ is a ratio that compares a number to 100.






24. A _________ is a randomly-selected group that is used to represent a whole population.






25. A _______ is a comparison of two numbers with different units of measure.






26. A diagram used to show the total number of possible outcomes in a probability experiment is called a _____________.






27. To add mixed numbers with unlike denominators - write equivalent fractions with a ___________ . Add the whole numbers and add the fractions.






28. The symbol > is read as _________.






29. A _________ is a special kind of bar graph that shows frequency of data.






30. To add or subtract fractions with unlike denominators - you need to change the fractions to equivalent fractions with ____________ before you find the sum or difference.






31. Similar figures have the same shape but different sizes. The symbol ~ means _________ .






32. Use __________ to compare two decimals - using the order symbols.






33. Both addition and multiplication are _________ . This means that order doesnft change the sum or product.






34. To _____________ - express the mixed numbers as improper fractions - multiply - and simplify the results.






35. A figure that can be rotated 180° about a point so that it matches the original figure has ______ .






36. In a __________ - an object slides from one position to another without changing its size or shape.






37. To express a ______ as a _______ - rewrite the percent as a fraction with a denominator of 100 - and then express the fraction as a decimal.






38. An _________ is a mathematical sentence that contains < - > - - ≤ - or ≥ .






39. In a power - the number of times the base is used as a factor is the ________ . In 5³ - the exponent is 3.






40. In a power - the number used as a factor is the base. In 10³ - the ________ is 10. That is - 10³ = 10 X 10 X 10.






41. An approximation of pi is 3.14 - or _______ .






42. Make a __________ of an integer by using its placement on the number line.






43. The __________ of a solid is the total area of its exterior surfaces.






44. When two or more numbers are multiplied - each number is called a _________ .






45. The ________ is used to represent the ratio of distance on the map to the actual distance.






46. To __________ an algebraic expression means to substitute a value for the variables and apply the rules for order of operation.






47. To ______________ - if the denominators are unlike - write equivalent fractions with a common denominator. Subtract the fractions first - and rename if necessary. Then subtract the whole numbers. Simplify if possible.






48. A _______ is the comparison of two numbers by division.






49. The line or the fold is called the __________ .






50. The symbol ≤ is read as __________ .