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






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






3. The set of all possible outcomes is _____________.






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






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






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






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






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






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






11. 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.






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






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






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






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






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






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






18. The symbol < is read as ________ .






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






20. ______________ 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.






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






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






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






24. 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.






25. The symbol ______ means percent.






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






27. 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).






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






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






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






31. 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.






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






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






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






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






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






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






38. The symbol ≤ is read as __________ .






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






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






41. 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.






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






43. The symbol ≥ is read as ______________.






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






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






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






47. Use number lines to ________ two decimals.






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






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






50. 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.






Can you answer 50 questions in 15 minutes?



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