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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)
denominator
Sum of values/number of values
Invert second term - then multiply
associative property

2. The greatest whole number that is a factor of two or more nonzero whole numbers
greatest common factor
quotient
variables
root numbers

3. Properties of numbers btw -1 and 1

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4. Multiplying decimals
compensation
Number of decimal places is total number of decimals places in factors multiplied
Sum of digits divisible by 9
Value occurring most frequently

5. Comparing decimal fractions
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
less than
Add zeros to decimals until all decimals have same number of digits
1 dividing by number

6. Number divisible by 5
Total A/total B
Last digit 0 or 5
divisible
Multiply by 100%

7. Average A per B
root numbers
terminating decimals
Total A/total B
equation

8. Answer to a division problem
Drop percent - move decimal point two place to left
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
quotient
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

9. Adding/subtracting fractions
Divide out largest common factor
constants
LCM is LCD
(Amount of decrease/original whole) x100%

10. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
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
order of operations
Last two digits divisible by 4
equivalent

11. Simplifying complex fractions: two methods
less than
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
commutative property
odd number

12. Reciprocal of number
Probability for each event then multiply individual probabilities together
associative property
estimate
1 dividing by number

13. To find the answer for; solve
Part
distributive property
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
evaluate

14. Properties of 1 and -1

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15. A number made up of a whole number and a fraction
mixed number
Original whole +/- amount of change
number line
not equal

16. The smallest number in a group of numbers
least
whole number
expanded form using exponents
improper fraction

17. Number divisible by 3
Add zeros to decimals until all decimals have same number of digits
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Sum of digits divisible by 3
root numbers

18. Properties of 0

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19. The largest number in a group of numbers
sum
greatest
Middle value
least

20. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
LCM is LCD
even number
least common multiple
not equal

21. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
Divide out largest common factor
proportion
Last digit divisible by 2
order of operations

22. Probability
Number of desired outcomes/number of total possible outcomes
digit
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
prime factorization

23. In 4x4=16 - what is 4?
root numbers
greater than
Last two digits divisible by 4
greatest common factor

24. 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
identity property
product
expanded form using exponents
Divide out largest common factor

25. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
Divide by 100%
Last digit 0 or 5
repeating decimals
exponents

26. 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
expanded form using exponents
greatest
irrational numbers
ratio

27. An equation showing 2 ratios are equal
composite number
expanded form using exponents
LCM is LCD
proportion

28. How much a number is worth
value
LCM is LCD
Number w/o signs
order of operations

29. Absolute value of number
exponents
Number w/o signs
odd
terminating decimals

30. To drop a percent
Greater spread in values
quotient
Divide by 100%
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

31. 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?
numerator
even
simplify
expanded form using exponents

32. Number divisible by 2
commutative property
Divide by 100%
associative property
Last digit divisible by 2

33. A line for representing and graphing numbers. Each point on the line corresponds to a number.
evaluate
Drop percent - move decimal point two place to left
number line
order of operations

34. 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?
terminating decimals
prime number
least common multiple
denominator

35. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
even
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
terminating decimals
place value

36. Standard deviation: greater if...
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Last two digits divisible by 4
associative property
Greater spread in values

37. odd + odd
equivalent
least
even
Reduce diagonally/vertically then multiply numerators and denominators

38. Reducing fractions
distributive property
Divide out largest common factor
decimal
whole number

39. Be identical or equivalent to
improper fraction
equal
Drop percent - move decimal point two place to left
prime factorization

40. A number with one or more digits to the right of the decimal point - E.g. .33
factor pair
decimal
repeating decimals
constants

41. A number with more than two factors
LCM is LCD
decimal
Last digit divisible by 2
composite number

42. Able to be divided evenly (without a remainder)
expanded form using exponents
mixed number
equal
divisible

43. Multiplying fractions
prime factorization
Reduce diagonally/vertically then multiply numerators and denominators
value
evaluate

44. A fraction whose numerator is greater than its denominator
compensation
improper fraction
Last digit divisible by 2
Last two digits divisible by 4

45. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
commutative property
place value
denominator
common denominator

46. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
Part
associative property
perfect square
digit

47. New whole
Original whole +/- amount of change
factor pair
ratio
root numbers

48. To change a percent to a decimal
Drop percent - move decimal point two place to left
compensation
Original whole +/- amount of change
difference

49. odd + even
root numbers
number line
factor
odd

50. Relationship in which a number is smaller than another
variables
less than
evaluate
root numbers