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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 opposite of a positive integer is a ________ .






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






3. The symbol > is read as _________.






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






5. 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.






6. ___________ is a number that can be written using an exponent. For example - 3² means three to the second power.






7. 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.






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






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






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






11. 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.






12. Use number lines to ________ two decimals.






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






14. The symbol ______ means percent.






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






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






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






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






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






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






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






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






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






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






25. 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.






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






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






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






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






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






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






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






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






34. The symbol ≥ is read as ______________.






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






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






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






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






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






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






41. The symbol < is read as ________ .






42. 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.






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






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






45. 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.






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






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






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






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






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







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