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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. 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
associative property
terminating decimals
irrational numbers
square number

2. Properties of numbers btw -1 and 1

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3. To change a percent to a decimal
Multiply by 100%
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
value
Drop percent - move decimal point two place to left

4. When you add 0 to a number - or mulltiply a number by 1 - the result is the same number - e.g. Identity Property of Multiplication: 21x1=1x21=21 or 300x 1 = 300
commutative property
greater than
identity property
percent

5. The answer to a multiplication problem
not equal
commutative property
product
improper fraction

6. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
prime factorization
Sum of digits divisible by 3
digit
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. 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.
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
least common multiple
compensation
Sum of digits divisible by 3

8. An equation showing 2 ratios are equal
equal
proportion
Sum of digits divisible by 3
greatest common factor

9. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
divisible
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
odd number
Number of desired outcomes/number of total possible outcomes

10. Percent decrease
whole number
(Amount of decrease/original whole) x100%
proportion
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

11. Two expressions that are set equal to each other; a number sentence with an equal sign
equation
Number of decimal places is total number of decimals places in factors multiplied
Greater spread in values
inverse property

12. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
even number
root numbers
Reduce diagonally/vertically then multiply numerators and denominators
Divide by 100%

13. The number at the top of a fraction; stands for the parts of a set you are considering - E.g. 3/4 What position is 3?
number line
numerator
equivalent
place value

14. 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
Greater spread in values
associative property
prime factorization

15. Multiple-event probability
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
Middle value
Probability for each event then multiply individual probabilities together
divisibility by 3 rule

16. The greatest whole number that is a factor of two or more nonzero whole numbers
whole number
inverse property
greatest common factor
exponents

17. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
Total A/total B
range
terminating decimals
proportion

18. 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?
decimal
denominator
Sum of values/number of values
Last digit 0 or 5

19. Reducing fractions
Divisible by 2 and 3
Divide out largest common factor
evaluate
composite number

20. The answer to a subtraction problem
associative property
difference
Divisible by 2 and 3
Last digit 0 or 5

21. A fraction out of 100 - %
compute
product
percent
expanded form using exponents

22. The smallest number in a group of numbers
least
equation
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
expression

23. The largest number in a group of numbers
Multiply by 100%
variables
greatest
Last digit 0 or 5

24. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
estimate
compatible numbers
rational numbers
Greater spread in values

25. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
Sum of digits divisible by 9
factor pair
prime number
Middle value

26. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
identity property
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
least common multiple
percent

27. Absolute value of number
square number
irrational numbers
Last digit divisible by 2
Number w/o signs

28. Probability
greater than
Number of desired outcomes/number of total possible outcomes
expanded form using exponents
Sum of values/number of values

29. A shortcut for writing repeated multiplication
terminating decimals
quotient
exponents
composite number

30. Average A per B
improper fraction
place value
expression
Total A/total B

31. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
associative property
expanded form using exponents
compensation
least common multiple

32. Number divisible by 5
odd
Last digit divisible by 2
Last digit 0 or 5
prime factorization

33. Mode
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
equation
Add zeros to decimals until all decimals have same number of digits
Value occurring most frequently

34. A number made up of a whole number and a fraction
Sum of values/number of values
mixed number
estimate
Sum of digits divisible by 3

35. A number with one or more digits to the right of the decimal point - E.g. .33
decimal
Multiply by 100%
Divisible by 2 and 3
Divide by 100%

36. Simplifying complex fractions: two methods
Divide out largest common factor
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
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
simplify

37. In 4x4=16 - what is 4?
proportion
repeating decimals
estimate
root numbers

38. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
order of operations
greater than
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
root numbers

39. Average value
Original whole +/- amount of change
square number
not equal
Sum of values/number of values

40. Be identical or equivalent to
simplify
equal
Sum of digits divisible by 3
constants

41. odd + odd
Probability for each event then multiply individual probabilities together
value
even
divisible

42. A set of operators - numbers - variables and grouping symbols; no equal sign
proportion
expression
Middle value
Original whole +/- amount of change

43. Number divisible by 3
odd number
product
LCM is LCD
Sum of digits divisible by 3

44. Percent x whole
Part
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Original whole +/- amount of change
prime number

45. Dividing fractions
Divide out largest common factor
Invert second term - then multiply
prime number
digit

46. The answer to an addition problem
odd
composite number
perfect square
sum

47. Reciprocal of number
estimate
ratio
1 dividing by number
percent

48. Number divisible by 2
commutative property
Add zeros to decimals until all decimals have same number of digits
Last digit divisible by 2
Middle value

49. A line for representing and graphing numbers. Each point on the line corresponds to a number.
Last digit divisible by 2
number line
greater than
associative property

50. Properties of 1 and -1

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