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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. 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.






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






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






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






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






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






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






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






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






11. ______________ 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.






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






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






14. 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.






15. The set of all possible outcomes is _____________.






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






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






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






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






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






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






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






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






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






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






26. 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).






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






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






29. The symbol > is read as _________.






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






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






32. The symbol ≥ is read as ______________.






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






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






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






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






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






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






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






40. The symbol ≤ is read as __________ .






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






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






43. 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.






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






45. The symbol ______ means percent.






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






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






48. 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.






49. Use number lines to ________ two decimals.






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