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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. Dividing decimals
distributive property
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Sum of digits divisible by 9
proportion

2. A number with one or more digits to the right of the decimal point - E.g. .33
equation
decimal
equal
simplify

3. Reducing fractions
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
Divide out largest common factor
fraction
Sum of values/number of values

4. A number with more than two factors
composite number
equation
1 dividing by number
simplify

5. Number divisible by 2
numerator
Last digit divisible by 2
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
prime number

6. Number divisible by 4
proportion
denominator
Last two digits divisible by 4
constants

7. 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)
Original whole +/- amount of change
associative property
prime factorization
compensation

8. Number divisible by 9
Greater spread in values
proportion
Sum of digits divisible by 9
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

9. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
Sum of digits divisible by 9
1 dividing by number
repeating decimals
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

10. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
equivalent
prime factorization

11. Comparing positive fractions
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
order of operations
least common multiple

12. Answer to a division problem
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
Original whole +/- amount of change
quotient
square number

13. The largest number in a group of numbers
equivalent
denominator
divisible
greatest

14. 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?
mixed number
numerator
simplify
denominator

15. Mode
constants
Value occurring most frequently
Sum of digits divisible by 9
estimate

16. Answer to a multiplication problem
composite number
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
product
Middle value

17. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
Part
difference
decimal
terminating decimals

18. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
(Amount of decrease/original whole) x100%
1 dividing by number
fraction
constants

19. Percent decrease
expression
Reduce diagonally/vertically then multiply numerators and denominators
(Amount of decrease/original whole) x100%
simplify

20. New whole
Last digit 0 or 5
perfect square
Number of desired outcomes/number of total possible outcomes
Original whole +/- amount of change

21. Adding/subtracting fractions
Line up decimal points
even
LCM is LCD
common denominator

22. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
digit
rational numbers
Last two digits divisible by 4
numerator

23. odd + even
odd
estimate
common denominator
Invert second term - then multiply

24. Probability
odd number
equivalent
Number of desired outcomes/number of total possible outcomes
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

25. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
Reduce diagonally/vertically then multiply numerators and denominators
percent
prime number
(Amount of decrease/original whole) x100%

26. To change a percent to a decimal
prime factorization
Drop percent - move decimal point two place to left
repeating decimals
percent

27. Percent increase
irrational numbers
(Amount of increase/original whole) x100%
ratio
evaluate

28. A fraction whose numerator is greater than its denominator
improper fraction
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
value
quotient

29. 8x8=64 What is 64?
digit
Divisible by 2 and 3
perfect square
Divide out largest common factor

30. The answer to a multiplication problem
Divide out largest common factor
sum
percent
product

31. When a number is larger than the other number. Example 65 > 56
mixed number
greater than
irrational numbers
decimal

32. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
sum
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
mixed number
order of operations

33. Multiple-event probability
Probability for each event then multiply individual probabilities together
distributive property
root numbers
factor

34. To drop a percent
Multiply by 100%
greatest common factor
Divide by 100%
Sum of values/number of values

35. 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)
Drop percent - move decimal point two place to left
commutative property
place value
compatible numbers

36. odd + odd
even number
odd
even
less than

37. Median
identity property
Original whole +/- amount of change
Middle value
factor

38. Comparing decimal fractions
Last digit divisible by 2
Add zeros to decimals until all decimals have same number of digits
composite number
order of operations

39. Relationship in which a number is smaller than another
less than
associative property
exponents
Sum of digits divisible by 3

40. Simplifying complex fractions: two methods
associative property
order of operations
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Divide out largest common factor

41. Number divisible by 5
Divide out largest common factor
distributive property
Last digit divisible by 2
Last digit 0 or 5

42. 1/5 + 1/4=4/20 +5/20 and 20 is the...
common denominator
1 dividing by number
Value occurring most frequently
proportion

43. 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?
product
denominator
order of operations
value

44. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
associative property
whole number
evaluate
inverse property

45. Average value
Sum of values/number of values
proportion
Line up decimal points
even

46. A shortcut for writing repeated multiplication
range
even
exponents
Part

47. A number that results from multiplying a factor by itself
proportion
square number
inverse property
distributive property

48. The answer to a subtraction problem
LCM is LCD
root numbers
product
difference

49. 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
product
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
inverse property
number line

50. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
Part
identity property
compensation
even number