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






2. 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.






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






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






5. 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.






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






7. 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.






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






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






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






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






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






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






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






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






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






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






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






19. The symbol < is read as ________ .






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






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






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






23. 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).






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






25. The symbol ______ means percent.






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






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






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






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






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






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






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






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






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






35. The set of all possible outcomes is _____________.






36. The symbol ≥ is read as ______________.






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






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






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






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






41. The symbol > is read as _________.






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






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






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






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






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






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






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






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






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