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






2. 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.






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






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






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






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






7. The symbol ______ means percent.






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






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






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






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






12. The symbol < is read as ________ .






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






14. ______________ 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.






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






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






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






18. 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).






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






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






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






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






23. The set of all possible outcomes is _____________.






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






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






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






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






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






29. 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.






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






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






32. The symbol > is read as _________.






33. Use number lines to ________ two decimals.






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






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






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






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






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






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






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






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






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






43. 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.






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






45. The symbol ≤ is read as __________ .






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






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






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






49. The symbol ≥ is read as ______________.






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