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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. The symbol ≤ is read as __________ .






2. The symbol ≥ is read as ______________.






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






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






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






6. Use number lines to ________ two decimals.






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






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






9. 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.






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






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






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






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






14. 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.






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






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






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






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






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






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






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






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






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






24. The set of all possible outcomes is _____________.






25. 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.






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






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






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






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






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






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






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






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






34. 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.






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






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






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






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






39. 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.






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






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






42. 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.






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






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






45. ______________ 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.






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






47. The symbol < is read as ________ .






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






49. 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).






50. The symbol ______ means percent.