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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. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
distributive property
order of operations
less than
greater than

2. Absolute value of number
Last two digits divisible by 4
factor
Number w/o signs
perfect square

3. The largest number in a group of numbers
root numbers
prime number
greatest
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

4. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
Original whole +/- amount of change
compensation
Multiply by 100%

5. The smallest number in a group of numbers
repeating decimals
range
least
Number of desired outcomes/number of total possible outcomes

6. A fraction whose numerator is greater than its denominator
Reduce diagonally/vertically then multiply numerators and denominators
improper fraction
Add zeros to decimals until all decimals have same number of digits
place value

7. A line for representing and graphing numbers. Each point on the line corresponds to a number.
Number w/o signs
ratio
least
number line

8. The answer to an addition problem
LCM is LCD
equal
sum
expanded form using exponents

9. Number divisible by 3
equal
commutative property
Sum of digits divisible by 3
variables

10. A number that is multiplied by another number to find a producr
Add zeros to decimals until all decimals have same number of digits
factor
product
rational numbers

11. Percent increase
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Divide by 100%
greatest common factor
(Amount of increase/original whole) x100%

12. Number divisible by 9
difference
Part
Sum of digits divisible by 9
associative property

13. The expression of a number as a product of prime factors; use a factor tree!
estimate
distributive property
Probability for each event then multiply individual probabilities together
prime factorization

14. 1/5 + 1/4=4/20 +5/20 and 20 is the...
Divide by 100%
difference
divisibility by 3 rule
common denominator

15. Answer to a multiplication problem
variables
Number of desired outcomes/number of total possible outcomes
product
greatest

16. Comparing positive fractions
quotient
distributive property
Middle value
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

17. Probability
prime number
Number of desired outcomes/number of total possible outcomes
composite number
Last two digits divisible by 4

18. 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.
(Amount of decrease/original whole) x100%
compensation
greatest common factor
equal

19. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
simplify
Greater spread in values
prime number
expanded form using exponents

20. Properties of numbers btw -1 and 1

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21. Reducing fractions
less than
expression
Divide out largest common factor
composite number

22. The answer to a multiplication problem
root numbers
product
factor pair
simplify

23. Average value
Sum of values/number of values
common denominator
Last digit divisible by 2
estimate

24. Adding/subtracting fractions
equivalent
terminating decimals
associative property
LCM is LCD

25. 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
whole number
Last digit 0 or 5
Last digit divisible by 2

26. Median
factor
percent
number line
Middle value

27. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
divisible
place value
difference
Last two digits divisible by 4

28. Simplifying complex fractions: two methods
Value occurring most frequently
order of operations
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
compatible numbers

29. Two expressions that are set equal to each other; a number sentence with an equal sign
Sum of digits divisible by 9
place value
inverse property
equation

30. Relationship in which a number is smaller than another
odd number
less than
prime factorization
improper fraction

31. A letter that represents a value that may change
variables
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Number of decimal places is total number of decimals places in factors multiplied
percent

32. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
distributive property
less than
expanded form using exponents
Divisible by 2 and 3

33. 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
root numbers
expanded form using exponents
equal

34. To place a fraction in lowest terms
simplify
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
fraction
difference

35. 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?
Last two digits divisible by 4
Probability for each event then multiply individual probabilities together
least common multiple
numerator

36. 8x8=64 What is 64?
(Amount of increase/original whole) x100%
Number of decimal places is total number of decimals places in factors multiplied
perfect square
Part

37. Number divisible by 4
improper fraction
decimal
Last two digits divisible by 4
divisible

38. A number that results from multiplying a factor by itself
square number
fraction
Last digit divisible by 2
evaluate

39. A number with one or more digits to the right of the decimal point - E.g. .33
compatible numbers
even number
Invert second term - then multiply
decimal

40. A comparison of 2 numbers; one form is a fraction
ratio
percent
odd
Divide out largest common factor

41. odd + even
irrational numbers
number line
constants
odd

42. Multiplying decimals
least
Number of decimal places is total number of decimals places in factors multiplied
difference
perfect square

43. Number divisible by 5
Last digit 0 or 5
whole number
square number
Multiply by 100%

44. Not identical or equivalent to
place value
not equal
Middle value
Divide by 100%

45. A fraction out of 100 - %
percent
number line
Total A/total B
associative property

46. 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
simplify
prime factorization
irrational numbers
(Amount of increase/original whole) x100%

47. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
greatest
digit
Sum of digits divisible by 9
(Amount of decrease/original whole) x100%

48. Reciprocal of number
1 dividing by number
Probability for each event then multiply individual probabilities together
Drop percent - move decimal point two place to left
compatible numbers

49. Dividing decimals
estimate
compatible numbers
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Reduce diagonally/vertically then multiply numerators and denominators

50. The greatest whole number that is a factor of two or more nonzero whole numbers
divisibility by 3 rule
difference
greatest common factor
sum