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






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






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






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






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






6. ______________ 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.






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






8. 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.






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






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






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






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






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






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






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






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






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






18. The set of all possible outcomes is _____________.






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






20. 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.






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






22. The symbol ≥ is read as ______________.






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






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






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






26. 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.






27. The symbol ______ means percent.






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






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






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






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






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






33. Use number lines to ________ two decimals.






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






35. 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).






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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