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






3. A ___________ is a transformation that turns a line or shape around a fixed point.






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






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






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






7. The symbol ≥ is read as ______________.






8. 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.






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






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






11. ______________ 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.






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






13. Use number lines to ________ two decimals.






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






15. The symbol ______ means percent.






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






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






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






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






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






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






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






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






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






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






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






27. 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.






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






29. 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.






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






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






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






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






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






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






37. 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.






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






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






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






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






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






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






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






45. The set of all possible outcomes is _____________.






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






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






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






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






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