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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 the comparison of two numbers by division.

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

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

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

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

6. 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.

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

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

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

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

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

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

13. 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.

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

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

16. ______________ 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.

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

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

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

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

21. The symbol > is read as _________.

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

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

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

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

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

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

28. 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.

29. The symbol ≤ is read as __________ .

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

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

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

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

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

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

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

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

38. The set of all possible outcomes is _____________.

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

40. 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.

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

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

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

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

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

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

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

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

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

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