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Number Sense Vocab

Subjects : math, number-sense
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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