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






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






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






4. The symbol > is read as _________.






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






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






7. ______________ 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.






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






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






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






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






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






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






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






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






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






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






18. 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.






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






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






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






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






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






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






25. 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.






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






27. 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.






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






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






30. The symbol ≤ is read as __________ .






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






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






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






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






35. The symbol ______ means percent.






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






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






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






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






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






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






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






43. Use number lines to ________ two decimals.






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






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






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






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






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






49. 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.






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