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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. If a figure can be divided in half by a line so that the two halves match each other - the figure is __________ .






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






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






4. To ____________ - replace the divisor with its reciprocal and then multiply to get your answer.






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






6. The set of all possible outcomes is _____________.






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






8. A _____________ is a system used to condense a set of data where the greatest place value of the data forms the stem and next greatest place value forms the leaves.






9. The symbol ≥ is read as ______________.






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






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






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






13. The _________ of an integer is the distance of the integer from zero.






14. The symbol < is read as ________ .






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






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






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






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






19. A ___________is for organizing a set of data that shows the number of times each item or number appears.






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






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






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






23. The symbol ______ means percent.






24. 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.






25. Instead of writing large numbers with all the zeros - you can use _________ . For example - 4 -250 -000 -000 = 4.25 x 10⁹.






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






27. The opposite of a positive integer is a ________ .






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






29. 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.






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






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






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






33. The symbol > is read as _________.






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






35. Use number lines to ________ two decimals.






36. The symbol ≤ is read as __________ .






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






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






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






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






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






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






43. The _________ of a circle is twice the length of the radius.






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






45. To add ____________ with common denominators - write the sum of the numerators over the common denominators. Then add the whole numbers.






46. A _________ is a symbol - usually a letter - used to represent a number.






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






48. Two angles are ___________ if the sum of their measures is 90°.






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






50. ______________ 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.