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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. A line for representing and graphing numbers. Each point on the line corresponds to a number.
decimal
inverse property
number line
greater than

2. A number that results from multiplying a factor by itself
percent
even number
repeating decimals
square number

3. Standard deviation: greater if...
factor
mixed number
distributive property
Greater spread in values

4. In 4x4=16 - what is 4?
associative property
digit
sum
root numbers

5. 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
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
inverse property
Sum of digits divisible by 9
percent

6. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
digit
Number of decimal places is total number of decimals places in factors multiplied
denominator
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

7. Median
not equal
Divide out largest common factor
Middle value
fraction

8. To drop a percent
Divide by 100%
numerator
identity property
greater than

9. Multiplying decimals
Number of decimal places is total number of decimals places in factors multiplied
associative property
inverse property
root numbers

10. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
Multiply by 100%
odd number
Reduce diagonally/vertically then multiply numerators and denominators
factor pair

11. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
Sum of values/number of values
compatible numbers
Number of desired outcomes/number of total possible outcomes
ratio

12. 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)
Drop percent - move decimal point two place to left
distributive property
associative property
factor pair

13. Properties of 0

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14. The answer to an addition problem
least
odd number
Number of desired outcomes/number of total possible outcomes
sum

15. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
greatest
expanded form using exponents
percent
prime number

16. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
greatest
least common multiple
Reduce diagonally/vertically then multiply numerators and denominators
Original whole +/- amount of change

17. Two factors together that are multiplied to equal a larger number.
compute
Original whole +/- amount of change
factor pair
Divide out largest common factor

18. The difference between the greatest and the least numbers in a set of data.
ratio
Multiply by 100%
least common multiple
range

19. Number divisible by 3
range
Sum of digits divisible by 3
simplify
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

20. Answer to a multiplication problem
perfect square
product
Reduce diagonally/vertically then multiply numerators and denominators
Sum of digits divisible by 3

21. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
Sum of digits divisible by 3
denominator
divisibility by 3 rule
decimal

22. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
Number w/o signs
equation
fraction
even number

23. A number that is multiplied by another number to find a producr
Divide by 100%
less than
least
factor

24. Average value
(Amount of decrease/original whole) x100%
Sum of values/number of values
irrational numbers
composite number

25. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
order of operations
fraction
irrational numbers
variables

26. 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)=
denominator
distributive property
irrational numbers
odd number

27. Percent increase
(Amount of increase/original whole) x100%
distributive property
compensation
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

28. The largest number in a group of numbers
Invert second term - then multiply
Part
Middle value
greatest

29. Number divisible by 5
greatest common factor
Middle value
Add zeros to decimals until all decimals have same number of digits
Last digit 0 or 5

30. A letter that represents a value that may change
Divisible by 2 and 3
Part
sum
variables

31. Adding/subtracting decimals
simplify
greater than
factor pair
Line up decimal points

32. To place a fraction in lowest terms
simplify
Middle value
Greater spread in values
Value occurring most frequently

33. Dividing fractions
identity property
Invert second term - then multiply
rational numbers
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

34. Absolute value of number
inverse property
Divide by 100%
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Number w/o signs

35. Number divisible by 2
value
Last digit divisible by 2
compensation
sum

36. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
proportion
odd
associative property
place value

37. The answer to a subtraction problem
perfect square
Last digit 0 or 5
difference
simplify

38. 8x8=64 What is 64?
Original whole +/- amount of change
perfect square
associative property
Sum of digits divisible by 3

39. A fraction whose numerator is greater than its denominator
improper fraction
expanded form using exponents
numerator
Sum of values/number of values

40. Not identical or equivalent to
odd
product
not equal
Sum of values/number of values

41. Comparing positive fractions
Sum of digits divisible by 3
equal
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

42. To find a number that is close to an exact answer - E.g. 23+24 is around 50
terminating decimals
evaluate
estimate
percent

43. Multiplying fractions
Reduce diagonally/vertically then multiply numerators and denominators
estimate
range
(Amount of increase/original whole) x100%

44. Two expressions that are set equal to each other; a number sentence with an equal sign
Number of decimal places is total number of decimals places in factors multiplied
equation
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
constants

45. An equation showing 2 ratios are equal
number line
proportion
compatible numbers
prime factorization

46. Answer to a division problem
estimate
sum
evaluate
quotient

47. odd + even
odd number
rational numbers
odd
commutative property

48. A set of operators - numbers - variables and grouping symbols; no equal sign
Part
prime factorization
expression
ratio

49. 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?
Sum of digits divisible by 3
denominator
range
LCM is LCD

50. A number made up of a whole number and a fraction
Value occurring most frequently
Number of decimal places is total number of decimals places in factors multiplied
Last digit 0 or 5
mixed number