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

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

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

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

5. The symbol < is read as ________ .

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

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

8. The symbol > is read as _________.

9. The set of all possible outcomes is _____________.

10. Use number lines to ________ two decimals.

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

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

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

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

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

16. The symbol ≤ is read as __________ .

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

32. 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.

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

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

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

36. ______________ 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.

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

38. The symbol ≥ is read as ______________.

39. 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.

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

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

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

43. 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.

44. 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).

45. 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.

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

47. The symbol ______ means percent.

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

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

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