Test your basic knowledge |

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 twice the length of the radius.






2. The symbol ≥ is read as ______________.






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






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






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






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






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






8. The symbol ______ means percent.






9. 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.






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






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






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






13. Use number lines to ________ two decimals.






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






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






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






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






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






19. The symbol ≤ is read as __________ .






20. 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.






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






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






23. 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.






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






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






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






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






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






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






30. The symbol > is read as _________.






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






32. 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.






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






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






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






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






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






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






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






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






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






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






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






44. ______________ 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.






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






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






47. 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.






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






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






50. The symbol < is read as ________ .