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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 the equal sign.

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

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

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

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

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

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

8. 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).

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

10. Use number lines to ________ two decimals.

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

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

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

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

15. The symbol ≤ is read as __________ .

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

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

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

19. 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.

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

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

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

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

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

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

26. 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.

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

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

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

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

31. The symbol > is read as _________.

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

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

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

35. The symbol ≥ is read as ______________.

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

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

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

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

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

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

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

43. The symbol ______ means percent.

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

45. The set of all possible outcomes is _____________.

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

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

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

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

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