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






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






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






4. 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.






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






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






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






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






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






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






11. The symbol ≥ is read as ______________.






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






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






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






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






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






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






18. The symbol > is read as _________.






19. 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).






20. 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.






21. 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.






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






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






24. The symbol ≤ is read as __________ .






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






40. 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.






41. The symbol ______ means percent.






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






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






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






45. 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.






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






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






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






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






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