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






2. The symbol < is read as ________ .






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






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






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






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






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






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






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






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






11. ______________ 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.






12. The symbol ______ means percent.






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






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






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






16. 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.






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






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






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






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






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






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






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






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






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






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






28. 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.






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






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






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






32. The set of all possible outcomes is _____________.






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






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






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






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






38. The symbol ≥ is read as ______________.






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






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






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






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






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






44. Use number lines to ________ two decimals.






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






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






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






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






49. 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.






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