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Number Sense Vocab

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 greatest whole number that is a factor of two or more nonzero whole numbers
Total A/total B
less than
common denominator
greatest common factor

2. Able to be divided evenly (without a remainder)
(Amount of decrease/original whole) x100%
product
divisible
common denominator

3. Dividing fractions
Invert second term - then multiply
Reduce diagonally/vertically then multiply numerators and denominators
ratio
Middle value

4. A set of operators - numbers - variables and grouping symbols; no equal sign
Multiplying/dividing number by 1 doesn't change number; multiplying/dividing number by -1 changes sign; sum of number of -1 times number is 0
Value occurring most frequently
irrational numbers
expression

5. Average value
Sum of values/number of values
square number
Sum of digits divisible by 9
fraction

6. Reciprocal of number
1 dividing by number
product
least common multiple
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

7. The answer to a multiplication problem
product
equation
sum
proportion

8. To change a percent to a decimal
Probability for each event then multiply individual probabilities together
Drop percent - move decimal point two place to left
greatest
(Amount of increase/original whole) x100%

9. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
factor
equation
Greater spread in values
fraction

10. A number made up of a whole number and a fraction
composite number
Line up decimal points
mixed number
place value

11. An equation showing 2 ratios are equal
Last digit 0 or 5
proportion
terminating decimals
digit

12. 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
prime number
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
sum
irrational numbers

13. A fraction whose numerator is greater than its denominator
improper fraction
less than
greatest common factor
inverse property

14. Adding/subtracting fractions
divisible
least common multiple
LCM is LCD
range

15. A number that is multiplied by another number to find a producr
ratio
order of operations
Middle value
factor

16. A number with more than two factors
product
Original whole +/- amount of change
1 dividing by number
composite number

17. odd + even
greater than
expanded form using exponents
place value
odd

18. Multiplying decimals
Divisible by 2 and 3
LCM is LCD
number line
Number of decimal places is total number of decimals places in factors multiplied

19. Percent x whole
0 and 1: Reciprocal greater than number - square less than number - positive number's product smaller than number - negative number's product larger than number; -1 and 0: reciprocal less than number
Reduce diagonally/vertically then multiply numerators and denominators
greater than
Part

20. Natural Numbers - Whole Numbers - Integers - Rational Numbers
rational numbers
Line up decimal points
commutative property
compatible numbers

21. Relationship in which a number is smaller than another
associative property
(Amount of increase/original whole) x100%
less than
Sum of values/number of values

22. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
greatest
digit
place value

23. Median
Middle value
odd
place value
percent

24. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
Part
greater than
compatible numbers
1 dividing by number

25. Multiple-event probability
Probability for each event then multiply individual probabilities together
difference
commutative property
least

26. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
simplify
order of operations
terminating decimals
common denominator

27. A letter that represents a value that may change
irrational numbers
Number w/o signs
variables
difference

28. Multiplying fractions
least
exponents
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Reduce diagonally/vertically then multiply numerators and denominators

29. Be identical or equivalent to
Original whole +/- amount of change
Last digit 0 or 5
LCM is LCD
equal

30. Mode
constants
Sum of digits divisible by 9
Value occurring most frequently
(Amount of increase/original whole) x100%

31. To make a percent
expression
Multiply by 100%
factor
LCM is LCD

32. A comparison of 2 numbers; one form is a fraction
estimate
divisible
ratio
root numbers

33. Simplifying complex fractions: two methods
distributive property
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Divide by 100%
Number of desired outcomes/number of total possible outcomes

34. When a number is larger than the other number. Example 65 > 56
Probability for each event then multiply individual probabilities together
greater than
irrational numbers
composite number

35. Not identical or equivalent to
less than
not equal
expression
square number

36. 1/5 + 1/4=4/20 +5/20 and 20 is the...
numerator
common denominator
Number of desired outcomes/number of total possible outcomes
expression

37. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
whole number
Reduce diagonally/vertically then multiply numerators and denominators
evaluate
Multiplying/dividing number by 1 doesn't change number; multiplying/dividing number by -1 changes sign; sum of number of -1 times number is 0

38. In 4x4=16 - what is 4?
composite number
compute
even number
root numbers

39. The smallest number in a group of numbers
root numbers
least
Divisible by 2 and 3
Line up decimal points

40. 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.
odd number
compensation
common denominator
divisible

41. Comparing decimal fractions
not equal
Add zeros to decimals until all decimals have same number of digits
least
decimal

42. odd + odd
rational numbers
Divide by 100%
digit
even

43. Two expressions that are set equal to each other; a number sentence with an equal sign
numerator
equation
Divide out largest common factor
range

44. Number divisible by 5
1 dividing by number
Last digit 0 or 5
greatest
compatible numbers

45. A number with one or more digits to the right of the decimal point - E.g. .33
irrational numbers
decimal
range
greatest common factor

46. How much a number is worth
Sum of digits divisible by 3
percent
value
odd number

47. The answer to a subtraction problem
evaluate
Sum of digits divisible by 3
difference
order of operations

48. Number divisible by 9
constants
Sum of digits divisible by 9
expression
evaluate

49. Comparing positive fractions
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
mixed number
difference
even

50. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
digit
Value occurring most frequently
denominator
terminating decimals