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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. Two factors together that are multiplied to equal a larger number.
product
square number
variables
factor pair

2. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
Original whole +/- amount of change
ratio
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
least common multiple

3. Reciprocal of number
equivalent
Number of desired outcomes/number of total possible outcomes
1 dividing by number
square number

4. A set of operators - numbers - variables and grouping symbols; no equal sign
evaluate
numerator
expression
common denominator

5. Two expressions that are set equal to each other; a number sentence with an equal sign
Last digit 0 or 5
equation
(Amount of increase/original whole) x100%
Last digit divisible by 2

6. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
inverse property
equivalent
sum
associative property

7. A number with one or more digits to the right of the decimal point - E.g. .33
less than
irrational numbers
decimal
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

8. Simplifying complex fractions: two methods
whole number
difference
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Last digit 0 or 5

9. The answer to an addition problem
sum
equivalent
divisibility by 3 rule
difference

10. A fraction whose numerator is greater than its denominator
Number of decimal places is total number of decimals places in factors multiplied
improper fraction
odd
Middle value

11. The answer to a multiplication problem
commutative property
simplify
equal
product

12. Absolute value of number
1 dividing by number
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Divide out largest common factor
Number w/o signs

13. To change a percent to a decimal
Drop percent - move decimal point two place to left
even number
common denominator
exponents

14. The answer to a subtraction problem
improper fraction
difference
repeating decimals
Greater spread in values

15. Standard deviation: greater if...
associative property
Greater spread in values
Sum of digits divisible by 9
proportion

16. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
whole number
even number
Number w/o signs
associative property

17. Not identical or equivalent to
expanded form using exponents
not equal
Value occurring most frequently
(Amount of decrease/original whole) x100%

18. Dividing fractions
Invert second term - then multiply
odd
fraction
square number

19. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
Reduce diagonally/vertically then multiply numerators and denominators
order of operations
expanded form using exponents
(Amount of increase/original whole) x100%

20. The largest number in a group of numbers
not equal
Total A/total B
decimal
greatest

21. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
compatible numbers
fraction
Value occurring most frequently
difference

22. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
prime number
Reduce diagonally/vertically then multiply numerators and denominators
1 dividing by number
even number

23. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
odd number
factor pair
factor
ratio

24. A number with more than two factors
even
fraction
constants
composite number

25. Number divisible by 6
divisibility by 3 rule
Divisible by 2 and 3
fraction
divisible

26. A comparison of 2 numbers; one form is a fraction
ratio
Last two digits divisible by 4
constants
divisibility by 3 rule

27. The expression of a number as a product of prime factors; use a factor tree!
Reduce diagonally/vertically then multiply numerators and denominators
prime factorization
repeating decimals
equal

28. Number divisible by 2
product
denominator
Last digit divisible by 2
root numbers

29. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
repeating decimals
Last digit 0 or 5
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
place value

30. Number divisible by 3
Number of desired outcomes/number of total possible outcomes
Middle value
terminating decimals
Sum of digits divisible by 3

31. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
Sum of digits divisible by 9
quotient
simplify
terminating decimals

32. Percent decrease
digit
(Amount of decrease/original whole) x100%
greater than
Number w/o signs

33. 1/5 + 1/4=4/20 +5/20 and 20 is the...
Invert second term - then multiply
common denominator
decimal
least common multiple

34. Multiple-event probability
prime factorization
Number of desired outcomes/number of total possible outcomes
identity property
Probability for each event then multiply individual probabilities together

35. Properties of numbers btw -1 and 1

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36. 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)
perfect square
commutative 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
order of operations

37. To place a fraction in lowest terms
simplify
least
inverse property
product

38. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
prime number
mixed number
(Amount of increase/original whole) x100%
Number w/o signs

39. A number made up of a whole number and a fraction
equation
mixed number
Sum of values/number of values
Original whole +/- amount of change

40. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
digit
variables
Greater spread in values
Total A/total B

41. odd + odd
commutative property
odd number
even
least common multiple

42. How much a number is worth
root numbers
Number w/o signs
equal
value

43. Number divisible by 9
digit
fraction
repeating decimals
Sum of digits divisible by 9

44. Multiplying decimals
Number of decimal places is total number of decimals places in factors multiplied
exponents
Middle value
Original whole +/- amount of change

45. Able to be divided evenly (without a remainder)
inverse property
divisible
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Sum of values/number of values

46. The greatest whole number that is a factor of two or more nonzero whole numbers
associative property
Part
greatest common factor
number line

47. Natural Numbers - Whole Numbers - Integers - Rational Numbers
Last digit 0 or 5
rational numbers
product
least common multiple

48. Adding/subtracting decimals
order of operations
Line up decimal points
Reduce diagonally/vertically then multiply numerators and denominators
Value occurring most frequently

49. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
divisibility by 3 rule
least common multiple
compatible numbers
Number w/o signs

50. Median
equivalent
decimal
Middle value
identity property