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






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






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






4. 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.






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






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






7. 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.






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






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






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






11. 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.






12. A ___________ is a proportion with one fraction with a denominator of 1.






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






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






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






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






17. The symbol ______ means percent.






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






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






20. The ____________ of a circle is always a little more than three times the diameter.






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






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






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






24. _________ integers are the same distance from zero in opposite directions on the number line.






25. The symbol < is read as ________ .






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






27. The symbol ≥ is read as ______________.






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






29. Use number lines to ________ two decimals.






30. The set of ________ consists of the positive whole numbers - zero - and the opposites of the positive whole numbers.






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






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






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






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






35. ______________ 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.






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






37. The symbol ≤ is read as __________ .






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






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






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






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






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






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






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






45. In a__________ - an object flips over a line without changing its size or shape.






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






47. When you add or subtract _________ that have the same or like denominators - you only add or subtract the numerators. The denominator stays the same.






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






49. 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.






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