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






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






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






4. The set of all possible outcomes is _____________.






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






6. The symbol ≤ is read as __________ .






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






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






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






10. 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.






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






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






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






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






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






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






17. 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.






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






19. 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).






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






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






22. The symbol > is read as _________.






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






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






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






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






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






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






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






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






31. Use number lines to ________ two decimals.






32. The symbol ______ means percent.






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






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






35. The symbol < is read as ________ .






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






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






38. The symbol ≥ is read as ______________.






39. 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.






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






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






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






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






44. ______________ 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.






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






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






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






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






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






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