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






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






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






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






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






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






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






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






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






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






11. Use number lines to ________ two decimals.






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






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






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






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






16. 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.






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






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






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






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






21. The symbol ≥ is read as ______________.






22. ______________ 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.






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






24. 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.






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






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






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






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






29. 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).






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






31. 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.






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






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






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






35. The set of all possible outcomes is _____________.






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






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






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






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






40. The symbol > is read as _________.






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






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






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






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






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






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






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






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






49. 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.






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