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






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






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






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. 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.






6. The set of all possible outcomes is _____________.






7. 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.






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






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






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






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






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






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






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






15. The symbol > is read as _________.






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






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






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






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






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






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






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






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






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






25. Use number lines to ________ two decimals.






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






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






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






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






30. A ___________is for organizing a set of data that shows the number of times each item or number appears.






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






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






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






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






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. An approximation of pi is 3.14 - or _______ .






37. The symbol ≥ is read as ______________.






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






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






40. 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.






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






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






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






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






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






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






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






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






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






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