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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 symbol < is read as ________ .






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






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






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






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






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






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






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






9. 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.






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






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






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






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






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






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






16. ______________ 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.






17. The symbol ≤ is read as __________ .






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






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






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






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






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






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






24. Use number lines to ________ two decimals.






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






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






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






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






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






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






31. 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.






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






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






34. 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.






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






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






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






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






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






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






41. The symbol ≥ is read as ______________.






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






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






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






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






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






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






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






49. 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.






50. 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.