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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 symbol - usually a letter - used to represent a number.






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






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






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






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






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






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






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






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






10. The set of all possible outcomes is _____________.






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






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






13. 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.






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






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






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






17. The symbol ______ means percent.






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






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






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






21. The symbol ≥ is read as ______________.






22. 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.






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






24. The symbol ≤ is read as __________ .






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






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






28. Use number lines to ________ two decimals.






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






30. The symbol < is read as ________ .






31. ______________ 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.






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






33. 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.






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






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






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






37. The symbol > is read as _________.






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






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






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






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






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






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






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






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






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






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






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






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






50. 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.