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Important Math Facts

Subject : math
  • Answer 50 questions in 15 minutes.
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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. In a power - the number of times the base is used as a factor is the ________ . In 5³ - the exponent is 3.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

25. The set of all possible outcomes is _____________.

26. The symbol < is read as ________ .

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

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

29. 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.

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

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

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

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

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

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

36. 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.

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

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

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

40. 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.

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

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

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

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

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

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

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

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

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

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