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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. 1/5 + 1/4=4/20 +5/20 and 20 is the...






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






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






4. To perform a calculation - E.g. 2+2=4






5. Percent x whole






6. A number with more than two factors






7. Comparing decimal fractions






8. Number divisible by 6






9. A number that results from multiplying a factor by itself






10. 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)






11. To find the answer for; solve






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






13. Relationship in which a number is smaller than another






14. The largest number in a group of numbers






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






16. Dividing fractions






17. Multiplying fractions






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






19. Median






20. Comparing positive fractions






21. Adding/subtracting fractions






22. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2






23. 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






24. Properties of 1 and -1






25. A letter that represents a value that may change






26. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3






27. Number divisible by 4






28. Not identical or equivalent to






29. Percent increase






30. Two expressions that are set equal to each other; a number sentence with an equal sign






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






32. Percent decrease






33. Simplifying complex fractions: two methods






34. Dividing decimals






35. 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?






36. Two factors together that are multiplied to equal a larger number.






37. To change a percent to a decimal






38. 8x8=64 What is 64?






39. Able to be divided evenly (without a remainder)






40. Be identical or equivalent to






41. How much a number is worth






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






43. Mode






44. Reciprocal of number






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






46. An equation showing 2 ratios are equal






47. 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.






48. The answer to a subtraction problem






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






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