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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. A number that is multiplied by another number to find a producr
rational numbers
compatible numbers
factor
Number w/o signs

2. An equation showing 2 ratios are equal
least
proportion
mixed number
expression

3. The difference between the greatest and the least numbers in a set of data.
variables
prime factorization
range
(Amount of decrease/original whole) x100%

4. 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)
odd number
even
associative property
Sum of digits divisible by 9

5. A number that results from multiplying a factor by itself
inverse property
square number
sum
commutative property

6. The largest number in a group of numbers
Sum of digits divisible by 9
Number of decimal places is total number of decimals places in factors multiplied
greatest
compatible numbers

7. To change a percent to a decimal
fraction
perfect square
equation
Drop percent - move decimal point two place to left

8. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
Divide by 100%
greatest
constants
repeating decimals

9. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
expanded form using exponents
Drop percent - move decimal point two place to left
digit
sum

10. Number divisible by 3
equal
Sum of digits divisible by 3
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
sum

11. A line for representing and graphing numbers. Each point on the line corresponds to a number.
greatest
Divide out largest common factor
number line
simplify

12. 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)=
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
Invert second term - then multiply
Sum of values/number of values
distributive property

13. To place a fraction in lowest terms
simplify
place value
exponents
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

14. Simplifying complex fractions: two methods
whole number
even
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
least

15. Percent increase
(Amount of increase/original whole) x100%
Add zeros to decimals until all decimals have same number of digits
odd number
odd

16. Dividing fractions
greater than
Invert second term - then multiply
estimate
order of operations

17. To perform a calculation - E.g. 2+2=4
compute
Divisible by 2 and 3
Sum of values/number of values
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

18. A letter that represents a value that may change
Sum of values/number of values
variables
difference
Number w/o signs

19. A number made up of a whole number and a fraction
mixed number
odd
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
common denominator

20. 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
divisibility by 3 rule
prime factorization
Original whole +/- amount of change

21. Number divisible by 2
associative property
Total A/total B
ratio
Last digit divisible by 2

22. Comparing decimal fractions
percent
Add zeros to decimals until all decimals have same number of digits
Middle value
denominator

23. Two factors together that are multiplied to equal a larger number.
inverse property
Value occurring most frequently
factor pair
simplify

24. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
less than
exponents
place value
even

25. The answer to an addition problem
prime factorization
square number
perfect square
sum

26. Relationship in which a number is smaller than another
less than
value
proportion
square number

27. Number divisible by 5
Last digit 0 or 5
least
mixed number
common denominator

28. 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
Sum of digits divisible by 3
compatible numbers
Last digit 0 or 5

29. Multiplying fractions
Reduce diagonally/vertically then multiply numerators and denominators
Divisible by 2 and 3
odd
expression

30. Natural Numbers - Whole Numbers - Integers - Rational Numbers
Add zeros to decimals until all decimals have same number of digits
distributive property
compute
rational numbers

31. The smallest number in a group of numbers
least
Number of decimal places is total number of decimals places in factors multiplied
prime number
place value

32. Adding/subtracting decimals
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Line up decimal points
Middle value

33. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
whole number
value
terminating decimals
expanded form using exponents

34. 8x8=64 What is 64?
perfect square
inverse property
(Amount of decrease/original whole) x100%
estimate

35. Average value
numerator
prime number
common denominator
Sum of values/number of values

36. A number with one or more digits to the right of the decimal point - E.g. .33
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
decimal
Greater spread in values
Divide out largest common factor

37. The expression of a number as a product of prime factors; use a factor tree!
number line
prime factorization
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

38. Comparing positive fractions
Number of desired outcomes/number of total possible outcomes
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
digit
1 dividing by number

39. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
denominator
number line
compatible numbers
equivalent

40. Not identical or equivalent to
(Amount of decrease/original whole) x100%
Part
not equal
rational numbers

41. Probability
denominator
Number of desired outcomes/number of total possible outcomes
variables
Value occurring most frequently

42. Number divisible by 9
odd
Sum of digits divisible by 9
number line
Divide by 100%

43. 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?
Middle value
numerator
expression
decimal

44. Answer to a multiplication problem
Number of decimal places is total number of decimals places in factors multiplied
product
simplify
Total A/total B

45. Percent x whole
odd number
Sum of digits divisible by 9
inverse property
Part

46. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
simplify
Part
Number of desired outcomes/number of total possible outcomes
terminating decimals

47. 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
common denominator
divisible

48. Multiple-event probability
commutative property
compatible numbers
Drop percent - move decimal point two place to left
Probability for each event then multiply individual probabilities together

49. Mode
(Amount of increase/original whole) x100%
Value occurring most frequently
associative property
perfect square

50. 1/5 + 1/4=4/20 +5/20 and 20 is the...
digit
commutative property
common denominator
exponents