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






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






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






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






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






6. 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.






7. The symbol > is read as _________.






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






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






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






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






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






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






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






15. 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.






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






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






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






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






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






21. The symbol < is read as ________ .






22. The symbol ≤ is read as __________ .






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






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






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






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






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






28. 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.






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






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






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






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






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






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






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






36. The symbol ≥ is read as ______________.






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






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






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






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






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






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






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






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






45. 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.






46. Use number lines to ________ two decimals.






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






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






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






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