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






2. ______________ 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.






3. 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.






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






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






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






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






8. Use number lines to ________ two decimals.






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






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






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






12. 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.






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






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






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






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






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






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






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






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






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






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






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






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






25. The symbol ______ means percent.






26. The symbol > is read as _________.






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






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






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






30. 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.






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






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






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






34. The set of all possible outcomes is _____________.






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






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






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






38. 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).






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






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






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






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






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






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






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






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






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






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






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






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