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






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






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






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






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






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






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






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






11. The symbol < is read as ________ .






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






31. 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.






32. The symbol ______ means percent.






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






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






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






36. 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.






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






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






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






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






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






43. The symbol > is read as _________.






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






45. ______________ 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.






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






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






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






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






50. The set of all possible outcomes is _____________.







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