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Number Sense Vocab

Subjects : math, number-sense
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. Standard deviation: greater if...






2. Rational numbers in decimal form that have a block of on or more digits that repeat continuously






3. A value that does not change; any number






4. In multiplication or addition - the order of two numbers may be switched around and the answer is the same. Ex: a+b = b+a. or (1x2) x 3=1x (2x3)






5. Percent decrease






6. Percent x whole






7. To make a percent






8. Comparing positive fractions






9. Choosing numbers close to the numbers in a problem - and then adjusting the answer to compensate for the numbers chosen - E.g. 23 + 18 and 23+20=43 Since 2 was added to 18 to make 20 - we need to take 2 away from 43.






10. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2






11. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)






12. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5






13. Mode






14. Adding/subtracting decimals






15. The bottom number in a fraction; tells how many parts a whole is divided into OR how many parts in a group - E.g. 2/4 and what position is the 4?






16. To place a fraction in lowest terms






17. Simplifying complex fractions: two methods






18. A number with one or more digits to the right of the decimal point - E.g. .33






19. To drop a percent






20. The answer to a subtraction problem






21. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.






22. Dividing decimals






23. Percent increase






24. odd + odd






25. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)






26. Average value






27. When a number is larger than the other number. Example 65 > 56






28. To find a number that is close to an exact answer - E.g. 23+24 is around 50






29. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6






30. Reciprocal of number






31. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers






32. Number divisible by 6






33. Not identical or equivalent to






34. A number made up of a whole number and a fraction






35. A property indicating a special way in which multiplication is applied to addition of two or more numbers in which each term inside a set of parentheses can be multiplied by a factor outside the parentheses - such as a(b + c) = ab + ac - or 7x (4+1)=






36. The answer to a multiplication problem






37. A number with more than two factors






38. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...






39. Number divisible by 5






40. Natural Numbers - Whole Numbers - Integers - Rational Numbers






41. Reducing fractions






42. A set of operators - numbers - variables and grouping symbols; no equal sign






43. Answer to a division problem






44. Number divisible by 9






45. Cannot be expressed in the form a/b. Include square roots of whole numbers that are not perfect squares and non terminating decimals that do not repeat. pi






46. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6






47. The expression of a number as a product of prime factors; use a factor tree!






48. A fraction whose numerator is greater than its denominator






49. New whole






50. Number divisible by 4