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






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






3. Use number lines to ________ two decimals.






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






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






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






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






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






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






10. 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.






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






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






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






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






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






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






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






18. The set of all possible outcomes is _____________.






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






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






21. The symbol > is read as _________.






22. 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).






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






24. ______________ 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.






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






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






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






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






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






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






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






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






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






34. The symbol ≥ is read as ______________.






35. The symbol ≤ is read as __________ .






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






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






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






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






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






41. 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.






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






43. The symbol ______ means percent.






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






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






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






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






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






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






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