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






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






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






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






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






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






8. Use number lines to ________ two decimals.






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






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






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






12. 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.






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






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






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






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






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






18. The set of all possible outcomes is _____________.






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






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






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






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






23. The symbol ______ means percent.






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






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






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






27. The symbol > is read as _________.






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






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






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






31. The symbol ≤ is read as __________ .






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






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






34. 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.






35. 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.






36. The symbol < is read as ________ .






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






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






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






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






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






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






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






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






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






46. ______________ 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.






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






48. 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.






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






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