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 add or subtract fractions with unlike denominators - you need to change the fractions to equivalent fractions with ____________ before you find the sum or difference.






2. A _________ is an equation that shows two ratios are equivalent.






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






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






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






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






7. _________ - _________ - and_______may be written by first writing each one as a fraction with a denominator of 100.






8. ______________ 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.






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






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






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






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






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






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






15. The set of all possible outcomes is _____________.






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






17. 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.






18. The symbol ≥ is read as ______________.






19. 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.






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






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






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






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






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






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






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






27. Use number lines to ________ two decimals.






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






29. The symbol ≤ is read as __________ .






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






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






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






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






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






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






36. 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.






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






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






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






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






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






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






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






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






45. The symbol ______ means percent.






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






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






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






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






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