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 opposite of a positive integer is a ________ .






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






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






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






5. 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.






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






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






8. Use number lines to ________ two decimals.






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






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






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






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






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






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






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






16. 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).






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






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






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






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






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






22. The symbol ≤ is read as __________ .






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






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






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






26. 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.






27. The set of all possible outcomes is _____________.






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






29. 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.






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






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






32. 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.






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






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






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






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






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






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






39. The symbol ≥ is read as ______________.






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






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






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






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






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






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






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






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






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






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






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