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






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






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






4. The set of all possible outcomes is _____________.






5. 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.






6. 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.






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






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






9. 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.






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






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






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






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






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






15. 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.






16. The _________ states that multiplying a sum by a number is the same as multiplying each addend by that number and then adding the two products. For example - 3(8 + 2) = (3 x 8) + (3 x 2).






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






18. The ________ of an angle is the common endpoint of the rays forming the angle.






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






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






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






22. The symbol ______ means percent.






23. The symbol ≤ is read as __________ .






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






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






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






27. Use number lines to ________ two decimals.






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






29. The rules to follow when more than one operation is used are called the ___________.






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






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






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






33. Two angles are ___________ if the sum of their measures is 180°.






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






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






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






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






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






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






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






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






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






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






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






46. 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.






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






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






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






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







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