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 90°.






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






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






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






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






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






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






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






9. The symbol ≤ is read as __________ .






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






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






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






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






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






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






16. 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.






17. The symbol ______ means percent.






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






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






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






21. 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).






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






23. The symbol > is read as _________.






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






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






26. Use number lines to ________ two decimals.






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






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






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






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






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






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






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






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






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






36. 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.






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






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






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






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






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






42. ______________ 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.






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






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






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






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






47. The set of all possible outcomes is _____________.






48. 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.






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






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