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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 always a little more than three times the diameter.






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






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






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






5. The symbol ≤ is read as __________ .






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






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






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






9. 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.






10. 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.






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






12. 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.






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






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






15. The set of all possible outcomes is _____________.






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






17. 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.






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






19. Use number lines to ________ two decimals.






20. The symbol ≥ is read as ______________.






21. 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.






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






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






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






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






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






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






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






29. ______________ 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.






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






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






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






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






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






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






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






37. The symbol < is read as ________ .






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






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






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






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






42. 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.






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






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






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






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






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






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






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






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