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






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






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






4. Use number lines to ________ two decimals.






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






6. The symbol < is read as ________ .






7. The symbol > is read as _________.






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






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






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






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






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






13. 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.






14. 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.






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






16. ______________ 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.






17. The symbol ≤ is read as __________ .






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






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






20. 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.






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






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






23. 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.






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






25. 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.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






49. The set of all possible outcomes is _____________.






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