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Important Math Facts

Subject : math
  • Answer 50 questions in 15 minutes.
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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. 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.

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

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

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

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

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

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

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

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

12. 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).

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

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

15. The symbol ______ means percent.

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

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

18. The symbol > is read as _________.

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

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

21. The symbol ≤ is read as __________ .

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

23. The symbol < is read as ________ .

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

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

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

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

28. 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.

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

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

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

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

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

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

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

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

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

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

39. Use number lines to ________ two decimals.

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

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

42. The set of all possible outcomes is _____________.

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

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

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

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

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

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

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

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