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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 symbol > is read as _________.






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






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






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






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






6. The symbol ______ means percent.






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






8. The symbol ≥ is read as ______________.






9. ______________ 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.






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






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






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






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






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






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






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






17. Use number lines to ________ two decimals.






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






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






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






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






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






23. 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.






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






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






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






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






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. The symbol ≤ is read as __________ .






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






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






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






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






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






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






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






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






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






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






40. 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.






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






42. The set of all possible outcomes is _____________.






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






44. 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).






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






46. 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.






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






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






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






50. 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.