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






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






3. 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).






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






5. The symbol < is read as ________ .






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






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






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






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






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






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






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






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






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






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






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






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






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






19. The symbol > is read as _________.






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






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






22. The set of all possible outcomes is _____________.






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






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






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






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






27. The symbol ≤ is read as __________ .






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






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






30. 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.






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






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






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






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






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






36. 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.






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






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






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






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






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






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






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






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






45. The symbol ______ means percent.






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






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






48. 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.






49. 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.






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