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Important Math Facts

Subject : math
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. The line or the fold is called the __________ .

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

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

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

5. The symbol ______ means percent.

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

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

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

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

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

11. The set of all possible outcomes is _____________.

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

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

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

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

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

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

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

19. The symbol < is read as ________ .

20. The symbol > is read as _________.

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

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

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

24. ______________ 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.

25. 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.

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

27. When two or more numbers are multiplied - each number is called a _________ .

28. The symbol ≥ is read as ______________.

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

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

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

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

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

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

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

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

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

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

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

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

41. 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.

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

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

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

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

47. 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.

48. The symbol ≤ is read as __________ .

49. 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.

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