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






2. Use number lines to ________ two decimals.






3. The symbol ______ means percent.






4. 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.






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






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






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






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






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






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






11. The symbol < is read as ________ .






12. The set of all possible outcomes is _____________.






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






14. 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.






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






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






17. ______________ 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.






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






19. 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.






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






21. The symbol > is read as _________.






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






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






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






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






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






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






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






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






30. 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.






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






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






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






34. 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).






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






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






37. 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.






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






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






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






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






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






43. The symbol ≥ is read as ______________.






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






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






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






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






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






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






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