# Important Math Facts

Subject : math
Instructions:
• Answer 50 questions in 15 minutes.
• If you are not ready to take this test, you can study here.
• Match each statement with the correct term.
• Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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

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

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

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

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

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

7. The symbol ______ means percent.

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

9. 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.

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

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

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

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

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

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

16. 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.

17. The symbol ≤ is read as __________ .

18. 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.

19. The symbol ≥ is read as ______________.

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

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

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

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

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

25. The symbol < is read as ________ .

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

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

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

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

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

31. ______________ 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.

32. 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).

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

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

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

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

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

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. Use number lines to ________ two decimals.

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

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

42. The set of all possible outcomes is _____________.

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

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

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

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

47. The symbol > is read as _________.

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

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