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

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

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

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

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

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

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

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

9. The set of all possible outcomes is _____________.

10. The symbol ______ means percent.

11. 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).

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

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

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

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

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

17. 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.

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

19. 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.

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

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

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

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

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

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

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

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

29. The symbol ≤ is read as __________ .

30. 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.

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

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

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

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

35. 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.

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

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

38. The symbol ≥ is read as ______________.

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

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

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

42. Use number lines to ________ two decimals.

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

44. 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.

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

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

47. 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.

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

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

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