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






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






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






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






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






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






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






8. The symbol ≥ is read as ______________.






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






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






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






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






13. 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).






14. The symbol ≤ is read as __________ .






15. The symbol < is read as ________ .






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






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






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






19. 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.






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






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






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






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






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






26. 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.






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






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






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






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






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






32. The set of all possible outcomes is _____________.






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






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






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






36. 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.






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






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






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






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






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






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






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






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






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






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






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






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






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






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