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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. Comparing positive fractions
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
common denominator
even number
factor

2. A number with one or more digits to the right of the decimal point - E.g. .33
value
decimal
Greater spread in values
Drop percent - move decimal point two place to left

3. Multiplying fractions
Divisible by 2 and 3
Reduce diagonally/vertically then multiply numerators and denominators
percent
Number of decimal places is total number of decimals places in factors multiplied

4. A fraction out of 100 - %
rational numbers
prime number
percent
LCM is LCD

5. The answer to a subtraction problem
difference
Sum of digits divisible by 3
product
Original whole +/- amount of change

6. Number divisible by 6
Divisible by 2 and 3
Number w/o signs
factor
not equal

7. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
equal
(Amount of decrease/original whole) x100%
compatible numbers
value

8. Number divisible by 2
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
Last digit divisible by 2
estimate
Middle value

9. Two factors together that are multiplied to equal a larger number.
factor pair
odd number
LCM is LCD
expression

10. A shortcut for writing repeated multiplication
repeating decimals
denominator
exponents
expanded form using exponents

11. To make a percent
Multiply by 100%
fraction
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
denominator

12. To find a number that is close to an exact answer - E.g. 23+24 is around 50
evaluate
Number w/o signs
estimate
(Amount of decrease/original whole) x100%

13. Median
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
distributive property
Middle value
repeating decimals

14. The answer to an addition problem
decimal
not equal
Divisible by 2 and 3
sum

15. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
root numbers
Invert second term - then multiply
digit
equal

16. Dividing fractions
Number of desired outcomes/number of total possible outcomes
Number w/o signs
compute
Invert second term - then multiply

17. 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
terminating decimals
mixed number
Last digit divisible by 2
identity property

18. 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?
Sum of digits divisible by 9
(Amount of decrease/original whole) x100%
denominator
Number of desired outcomes/number of total possible outcomes

19. Two expressions that are set equal to each other; a number sentence with an equal sign
equation
square number
even
distributive property

20. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
least common multiple
prime factorization
fraction
Part

21. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
Invert second term - then multiply
repeating decimals
greatest common factor
Last digit 0 or 5

22. Number divisible by 4
difference
Last two digits divisible by 4
Sum of values/number of values
Sum of digits divisible by 3

23. A letter that represents a value that may change
terminating decimals
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
variables
exponents

24. Percent x whole
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
expanded form using exponents
Part

25. When a number is larger than the other number. Example 65 > 56
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
order of operations
sum
greater than

26. Multiplying decimals
quotient
Divisible by 2 and 3
Number of decimal places is total number of decimals places in factors multiplied
decimal

27. Standard deviation: greater if...
mixed number
equivalent
least common multiple
Greater spread in values

28. A line for representing and graphing numbers. Each point on the line corresponds to a number.
number line
composite number
mixed number
Total A/total B

29. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
order of operations
greater than
root numbers
Invert second term - then multiply

30. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
common denominator
Divisible by 2 and 3
product
whole number

31. New whole
divisibility by 3 rule
Original whole +/- amount of change
decimal
equation

32. Adding/subtracting fractions
commutative property
LCM is LCD
square number
even number

33. Be identical or equivalent to
proportion
composite number
least
equal

34. A fraction whose numerator is greater than its denominator
greatest
improper fraction
decimal
Total A/total B

35. Relationship in which a number is smaller than another
less than
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
LCM is LCD
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

36. A set of operators - numbers - variables and grouping symbols; no equal sign
compensation
expression
Invert second term - then multiply
Number of desired outcomes/number of total possible outcomes

37. To perform a calculation - E.g. 2+2=4
(Amount of decrease/original whole) x100%
Number of decimal places is total number of decimals places in factors multiplied
compute
Original whole +/- amount of change

38. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
even number
divisibility by 3 rule
improper fraction
Divide out largest common factor

39. An equation showing 2 ratios are equal
Drop percent - move decimal point two place to left
Part
proportion
Add zeros to decimals until all decimals have same number of digits

40. The expression of a number as a product of prime factors; use a factor tree!
rational numbers
prime factorization
Divide out largest common factor
number line

41. 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)
expression
1 dividing by number
commutative property
equivalent

42. 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)=
expanded form using exponents
percent
odd
distributive property

43. Properties of numbers btw -1 and 1

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44. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
greater than
product
Divide by 100%
least common multiple

45. Average value
Sum of values/number of values
terminating decimals
Drop percent - move decimal point two place to left
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

46. 1/5 + 1/4=4/20 +5/20 and 20 is the...
common denominator
square number
Sum of digits divisible by 9
denominator

47. To drop a percent
divisible
Divide by 100%
(Amount of decrease/original whole) x100%
difference

48. Multiple-event probability
Probability for each event then multiply individual probabilities together
Middle value
improper fraction
Greater spread in values

49. A comparison of 2 numbers; one form is a fraction
Last digit 0 or 5
LCM is LCD
Number of desired outcomes/number of total possible outcomes
ratio

50. Answer to a multiplication problem
range
rational numbers
product
Middle value