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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. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
repeating decimals
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
product
ratio

2. Average A per B
variables
Total A/total B
ratio
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

3. Properties of 0

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4. Median
exponents
Middle value
not equal
number line

5. To drop a percent
Divide by 100%
place value
distributive property
sum

6. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
Sum of digits divisible by 9
compute
Divide out largest common factor
terminating decimals

7. Not identical or equivalent to
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
rational numbers
not equal
composite number

8. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
Last two digits divisible by 4
divisible
compatible numbers
equivalent

9. 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
difference
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
inverse property

10. 8x8=64 What is 64?
factor
irrational numbers
perfect square
common denominator

11. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
root numbers
order of operations
divisibility by 3 rule
less than

12. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
equal
least common multiple
Number w/o signs
Sum of values/number of values

13. Percent decrease
compute
place value
(Amount of decrease/original whole) x100%
factor pair

14. Dividing fractions
composite number
Value occurring most frequently
order of operations
Invert second term - then multiply

15. Reciprocal of number
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
factor pair
order of operations
1 dividing by number

16. Absolute value of number
Number w/o signs
simplify
numerator
percent

17. A line for representing and graphing numbers. Each point on the line corresponds to a number.
number line
prime number
product
terminating decimals

18. odd + odd
Sum of digits divisible by 3
simplify
Number of desired outcomes/number of total possible outcomes
even

19. Number divisible by 2
prime number
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
Last digit divisible by 2
repeating decimals

20. Answer to a multiplication problem
Sum of digits divisible by 9
quotient
common denominator
product

21. The answer to a subtraction problem
Divisible by 2 and 3
simplify
(Amount of increase/original whole) x100%
difference

22. A set of operators - numbers - variables and grouping symbols; no equal sign
expression
Last digit 0 or 5
decimal
distributive property

23. A fraction out of 100 - %
quotient
identity property
percent
even

24. The greatest whole number that is a factor of two or more nonzero whole numbers
product
greatest common factor
least
Number of decimal places is total number of decimals places in factors multiplied

25. Be identical or equivalent to
order of operations
equal
Number w/o signs
Sum of digits divisible by 9

26. To make a percent
prime number
greatest
Multiply by 100%
Divisible by 2 and 3

27. odd + even
expression
composite number
commutative property
odd

28. 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)=
Last digit 0 or 5
decimal
distributive property
equal

29. Number divisible by 4
mixed number
Last two digits divisible by 4
improper fraction
irrational numbers

30. 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?
place value
least
numerator
range

31. 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
not equal
Number of desired outcomes/number of total possible outcomes
inverse property
Last two digits divisible by 4

32. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
identity property
Reduce diagonally/vertically then multiply numerators and denominators
compatible numbers
fraction

33. 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
factor
square number
identity property
composite number

34. The expression of a number as a product of prime factors; use a factor tree!
order of operations
Divide out largest common factor
prime factorization
evaluate

35. Mode
equation
Greater spread in values
place value
Value occurring most frequently

36. A number that results from multiplying a factor by itself
square number
even number
percent
order of operations

37. A number that is multiplied by another number to find a producr
improper fraction
odd
factor
number line

38. 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.
product
compensation
Number of decimal places is total number of decimals places in factors multiplied
denominator

39. Percent x whole
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
percent
greatest
Part

40. The answer to an addition problem
Divide out largest common factor
sum
perfect square
Total A/total B

41. Adding/subtracting decimals
Line up decimal points
prime factorization
compute
terminating decimals

42. A number with one or more digits to the right of the decimal point - E.g. .33
decimal
Last digit divisible by 2
expression
prime factorization

43. The answer to a multiplication problem
product
Part
inverse property
order of operations

44. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
composite number
digit
Probability for each event then multiply individual probabilities together
range

45. Relationship in which a number is smaller than another
Divisible by 2 and 3
simplify
less than
estimate

46. To change a percent to a decimal
sum
factor pair
Drop percent - move decimal point two place to left
compute

47. Number divisible by 9
greatest common factor
Sum of digits divisible by 9
quotient
percent

48. Average value
number line
less than
Sum of values/number of values
improper fraction

49. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
Last digit 0 or 5
equivalent
equation
denominator

50. 1/5 + 1/4=4/20 +5/20 and 20 is the...
root numbers
mixed number
common denominator
distributive property