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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 property which allows you to add a number's opposite to it and always get 0 - The relationship of addition to subtraction or multiplication to division
inverse property
LCM is LCD
commutative property
exponents

2. Median
least common multiple
factor pair
divisibility by 3 rule
Middle value

3. 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
Number of desired outcomes/number of total possible outcomes
irrational numbers
equation
product

4. A fraction whose numerator is greater than its denominator
Divide out largest common factor
Divisible by 2 and 3
improper fraction
numerator

5. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
Last digit 0 or 5
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
odd number
percent

6. Multiplying fractions
value
commutative property
Reduce diagonally/vertically then multiply numerators and denominators
Sum of digits divisible by 9

7. Dividing decimals
compute
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
irrational numbers
odd

8. Able to be divided evenly (without a remainder)
divisible
decimal
Value occurring most frequently
proportion

9. The largest number in a group of numbers
greater than
greatest
(Amount of increase/original whole) x100%
percent

10. A number with more than two factors
root numbers
Line up decimal points
greater than
composite number

11. Number divisible by 6
Reduce diagonally/vertically then multiply numerators and denominators
commutative property
Divisible by 2 and 3
even number

12. Average A per B
repeating decimals
Sum of digits divisible by 3
Value occurring most frequently
Total A/total B

13. Answer to a multiplication problem
simplify
exponents
product
equal

14. To place a fraction in lowest terms
simplify
equation
identity property
proportion

15. Standard deviation: greater if...
Number of desired outcomes/number of total possible outcomes
perfect square
Greater spread in values
distributive property

16. Relationship in which a number is smaller than another
Sum of digits divisible by 3
whole number
Multiply by 100%
less than

17. 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)
commutative property
divisible
product
divisibility by 3 rule

18. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
expanded form using exponents
prime factorization
decimal
least common multiple

19. odd + odd
rational numbers
composite number
(Amount of decrease/original whole) x100%
even

20. Adding/subtracting decimals
Line up decimal points
improper fraction
associative property
odd number

21. New whole
Number w/o signs
expanded form using exponents
improper fraction
Original whole +/- amount of change

22. In 4x4=16 - what is 4?
commutative property
root numbers
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
expanded form using exponents

23. Number divisible by 4
Last two digits divisible by 4
difference
compatible numbers
equation

24. To find the answer for; solve
evaluate
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
common denominator
less than

25. The smallest number in a group of numbers
terminating decimals
greater than
least
even number

26. The greatest whole number that is a factor of two or more nonzero whole numbers
value
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
repeating decimals
greatest common factor

27. Not identical or equivalent to
common denominator
not equal
less than
equal

28. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
constants
expanded form using exponents
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
fraction

29. 8x8=64 What is 64?
prime number
Original whole +/- amount of change
Divide out largest common factor
perfect square

30. 1/5 + 1/4=4/20 +5/20 and 20 is the...
Sum of digits divisible by 3
common denominator
identity property
quotient

31. A line for representing and graphing numbers. Each point on the line corresponds to a number.
Probability for each event then multiply individual probabilities together
greatest
number line
identity property

32. Multiplying decimals
Number of decimal places is total number of decimals places in factors multiplied
prime number
factor pair
denominator

33. Absolute value of number
Total A/total B
Number w/o signs
Line up decimal points
identity property

34. Multiple-event probability
percent
denominator
Probability for each event then multiply individual probabilities together
decimal

35. Simplifying complex fractions: two methods
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
commutative property
product
Total A/total B

36. odd + even
(Amount of decrease/original whole) x100%
even number
odd
Number of desired outcomes/number of total possible outcomes

37. A property of real numbers that states that the sum or product of a set of numbers is the same - regardless of how the numbers are grouped - (a+b)+c=a+(b+c) - e.g. (1+2)+3=1+(2+3)
square number
irrational numbers
associative property
compensation

38. Mode
order of operations
Value occurring most frequently
irrational numbers
Middle value

39. Properties of numbers btw -1 and 1

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40. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
equivalent
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
Number of desired outcomes/number of total possible outcomes
Original whole +/- amount of change

41. Reciprocal of number
1 dividing by number
compensation
Number of desired outcomes/number of total possible outcomes
greatest

42. To perform a calculation - E.g. 2+2=4
compute
equation
Invert second term - then multiply
composite number

43. Answer to a division problem
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
number line
quotient
Number w/o signs

44. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
whole number
least
greatest common factor
fraction

45. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
even number
even
Probability for each event then multiply individual probabilities together
Original whole +/- amount of change

46. Adding/subtracting fractions
LCM is LCD
quotient
Drop percent - move decimal point two place to left
Divide out largest common factor

47. The answer to an addition problem
irrational numbers
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
sum
simplify

48. Properties of 0

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49. Reducing fractions
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
associative property
Sum of digits divisible by 9
Divide out largest common factor

50. 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.
compensation
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
(Amount of increase/original whole) x100%
inverse property