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

2. 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.

3. 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.

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

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

6. The symbol ≤ is read as __________ .

7. The symbol ______ means percent.

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

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

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

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

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

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

14. 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).

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

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

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

18. The symbol > is read as _________.

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

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

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

22. Use number lines to ________ two decimals.

23. 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.

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

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

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

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

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

29. The symbol < is read as ________ .

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

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

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

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

34. The set of all possible outcomes is _____________.

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

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

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

38. 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.

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

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

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

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

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

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

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

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

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

49. 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.

50. The symbol ≥ is read as ______________.