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






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






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






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






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






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






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






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






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






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






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






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






13. The symbol ≥ is read as ______________.






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






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






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






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






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






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






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






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






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






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






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






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






26. The symbol > is read as _________.






27. 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.






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






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






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






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






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






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






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






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






36. 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).






37. Use number lines to ________ two decimals.






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






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






40. The symbol < is read as ________ .






41. 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.






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






43. ______________ 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.






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






45. 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.






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






47. The set of all possible outcomes is _____________.






48. 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.






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






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







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