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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. The symbol ≤ is read as __________ .

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

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

5. 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.

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

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

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

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

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

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

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

13. 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.

14. 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.

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

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

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

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

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

20. ______________ 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.

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

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

23. 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).

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

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

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

27. The symbol < is read as ________ .

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

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

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

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

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

33. The symbol ≥ is read as ______________.

34. Use number lines to ________ two decimals.

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

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

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

38. 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.

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

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

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

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

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

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

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

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

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

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

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

50. The symbol ______ means percent.