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






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






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






4. 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.






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






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






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






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






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






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






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






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






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






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






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






16. The symbol ≥ is read as ______________.






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






18. ______________ 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.






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






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






21. The symbol ______ means percent.






22. 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.






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






24. 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.






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






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






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






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






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






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






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






32. The symbol ≤ is read as __________ .






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






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






35. Use number lines to ________ two decimals.






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






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






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






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






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






41. 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).






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






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






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






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






46. The set of all possible outcomes is _____________.






47. The symbol > is read as _________.






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






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






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







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