Test your basic knowledge |

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 ______________ - 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.






2. The set of all possible outcomes is _____________.






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






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






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






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






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






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






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






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






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






12. The symbol ≤ is read as __________ .






13. The symbol ≥ is read as ______________.






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






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






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






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






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






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






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






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






22. 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.






23. The symbol ______ means percent.






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






25. Use number lines to ________ two decimals.






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






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






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






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






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






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






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






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






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






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






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






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






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






39. 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.






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






41. The symbol > is read as _________.






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






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






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






45. 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).






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






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






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






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






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