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. ______________ 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.






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






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






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






5. The symbol ≥ is read as ______________.






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






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






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






9. The symbol > is read as _________.






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






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






12. 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.






13. The set of all possible outcomes is _____________.






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






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






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






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






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






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






20. 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).






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






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






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






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






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






26. 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.






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






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






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






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






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






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






34. 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.






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






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






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






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






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






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






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






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






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






45. Use number lines to ________ two decimals.






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






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






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






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






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