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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. Use number lines to ________ two decimals.






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






3. 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.






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






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






6. 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.






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






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






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






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






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






12. The symbol ≤ is read as __________ .






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






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






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






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






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






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






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






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






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






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






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






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






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






26. 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.






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






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






29. The symbol > is read as _________.






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






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






32. ______________ 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.






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






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






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






36. The symbol ______ means percent.






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






38. 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.






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






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






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






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






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






44. 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.






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






46. The set of all possible outcomes is _____________.






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






48. 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).






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






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