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Number Sense Vocab

Instructions:

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. 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)
associative property
equal
sum
prime factorization

2. Adding/subtracting decimals
greater than
Line up decimal points
ratio
(Amount of increase/original whole) x100%

3. A fraction out of 100 - %
Middle value
percent
denominator
greater than

4. 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
irrational numbers
order of operations
compatible numbers
fraction

5. The answer to a multiplication problem
Number w/o signs
divisibility by 3 rule
product
ratio

6. A value that does not change; any number
constants
commutative property
Last digit divisible by 2
difference

7. Multiplying decimals
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
proportion
Multiply by 100%
Number of decimal places is total number of decimals places in factors multiplied

8. Adding/subtracting fractions
LCM is LCD
sum
Number of desired outcomes/number of total possible outcomes
evaluate

9. Relationship in which a number is smaller than another
Divide by 100%
divisible
prime number
less than

10. Properties of numbers btw -1 and 1

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11. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
quotient
repeating decimals
expanded form using exponents
constants

12. Percent decrease
(Amount of decrease/original whole) x100%
identity property
value
divisible

13. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
decimal
Number of decimal places is total number of decimals places in factors multiplied
whole number
(Amount of decrease/original whole) x100%

14. Multiple-event probability
square number
Probability for each event then multiply individual probabilities together
numerator
equivalent

15. Answer to a multiplication problem
LCM is LCD
value
product
whole number

16. Dividing fractions
divisible
(Amount of increase/original whole) x100%
whole number
Invert second term - then multiply

17. Median
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
range
Last two digits divisible by 4
Middle value

18. When a number is larger than the other number. Example 65 > 56
even number
least
evaluate
greater than

19. Properties of 1 and -1

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20. To make a percent
Multiply by 100%
odd number
constants
ratio

21. Average value
Sum of values/number of values
Greater spread in values
mixed number
1 dividing by number

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
fraction
Last digit 0 or 5
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
Greater spread in values

23. Number divisible by 9
Sum of digits divisible by 9
Sum of digits divisible by 3
constants
compute

24. A set of operators - numbers - variables and grouping symbols; no equal sign
least common multiple
whole number
expression
range

25. Properties of 0

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26. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
prime number
least common multiple
product
compatible numbers

27. 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?
denominator
difference
place value
terminating decimals

28. 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
1 dividing by number
order of operations
(Amount of increase/original whole) x100%

29. To find a number that is close to an exact answer - E.g. 23+24 is around 50
decimal
distributive property
estimate
place value

30. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
even number
equivalent
Middle value
factor pair

31. To find the answer for; solve
evaluate
range
repeating decimals
expanded form using exponents

32. Reducing fractions
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
Divide out largest common factor
greatest common factor
Middle value

33. Comparing decimal fractions
LCM is LCD
compensation
Number w/o signs
Add zeros to decimals until all decimals have same number of digits

34. A number with more than two factors
Part
Original whole +/- amount of change
quotient
composite number

35. The expression of a number as a product of prime factors; use a factor tree!
even number
prime factorization
identity property
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

36. Reciprocal of number
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
terminating decimals
1 dividing by number
(Amount of increase/original whole) x100%

37. Two expressions that are set equal to each other; a number sentence with an equal sign
Add zeros to decimals until all decimals have same number of digits
compute
equation
(Amount of increase/original whole) x100%

38. Absolute value of number
odd
factor pair
Number w/o signs
Sum of digits divisible by 9

39. A number that is multiplied by another number to find a producr
repeating decimals
factor
odd
denominator

40. Number divisible by 5
even number
Last digit 0 or 5
number line
equation

41. Number divisible by 2
Invert second term - then multiply
Original whole +/- amount of change
decimal
Last digit divisible by 2

42. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
greatest
even number
rational numbers
odd number

43. A comparison of 2 numbers; one form is a fraction
Line up decimal points
ratio
LCM is LCD
greatest common factor

44. New whole
estimate
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
rational numbers
Original whole +/- amount of change

45. Number divisible by 4
1 dividing by number
factor pair
Last two digits divisible by 4
Last digit 0 or 5

46. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
even
order of operations
place 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

47. A number with one or more digits to the right of the decimal point - E.g. .33
simplify
Middle value
decimal
Total A/total B

48. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
variables
prime number
prime factorization
associative property

49. Be identical or equivalent to
equal
whole number
LCM is LCD
Divide by 100%

50. The difference between the greatest and the least numbers in a set of data.
associative property
factor
range
least