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






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






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






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






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






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






7. The symbol ≥ is read as ______________.






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






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






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






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






12. Use number lines to ________ two decimals.






13. The symbol ______ means percent.






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






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






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






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






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






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






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






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






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






24. The symbol < is read as ________ .






25. 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.






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






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






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






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






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






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






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






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






34. 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.






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






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






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






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






39. The symbol > is read as _________.






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






41. The symbol ≤ is read as __________ .






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






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






44. The set of all possible outcomes is _____________.






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






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






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






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






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






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