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

2. ______________ 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.

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

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

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

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

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

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

9. 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.

10. 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.

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

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

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

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

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

16. The symbol ≤ is read as __________ .

17. The set of all possible outcomes is _____________.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

33. 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.

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

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

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

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

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

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

40. Use number lines to ________ two decimals.

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

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

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

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

45. The symbol < is read as ________ .

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

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

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

49. 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.

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