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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 - express the percent as a fraction with a denominator of 100 - then simplify.






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






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






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






5. ______________ 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.






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






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






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






9. 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.






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






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






12. The symbol ≤ is read as __________ .






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






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






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






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






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






18. 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.






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






20. To ___________ - multiply the numerators and then multiply the denominators. Write the product in lowest terms.






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






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






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






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






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






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






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






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






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






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






31. 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).






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






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






34. The symbol ______ means percent.






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






36. The set of all possible outcomes is _____________.






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






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






39. The ______________ are the numbers of pieces of data that can represent the whole set of data. These common measures of central tendency are mean - median - and mode.






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






41. 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.






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






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






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






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






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






47. 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.






48. The symbol ≥ is read as ______________.






49. The symbol < is read as ________ .






50. Use number lines to ________ two decimals.