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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. 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
fraction
Total A/total B
identity property
Sum of digits divisible by 9

2. Adding/subtracting fractions
compensation
order of operations
simplify
LCM is LCD

3. Properties of numbers btw -1 and 1

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4. To place a fraction in lowest terms
simplify
root numbers
Last digit divisible by 2
greatest

5. Probability
Number of desired outcomes/number of total possible outcomes
Add zeros to decimals until all decimals have same number of digits
order of operations
Reduce diagonally/vertically then multiply numerators and denominators

6. Natural Numbers - Whole Numbers - Integers - Rational Numbers
distributive property
improper fraction
rational numbers
divisibility by 3 rule

7. Number divisible by 9
Last digit divisible by 2
distributive property
Sum of digits divisible by 9
Divisible by 2 and 3

8. Multiplying fractions
Sum of values/number of values
Reduce diagonally/vertically then multiply numerators and denominators
compute
variables

9. Multiple-event probability
Last digit divisible by 2
associative property
proportion
Probability for each event then multiply individual probabilities together

10. A letter that represents a value that may change
(Amount of decrease/original whole) x100%
1 dividing by number
variables
prime factorization

11. A number that is multiplied by another number to find a producr
factor
Number of desired outcomes/number of total possible outcomes
whole number
commutative property

12. To make a percent
mixed number
Multiply by 100%
equal
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

13. 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.
commutative property
compensation
greater than
Last two digits divisible by 4

14. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
compute
Value occurring most frequently
Number w/o signs
even number

15. Comparing positive fractions
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Last digit 0 or 5
least
composite number

16. Able to be divided evenly (without a remainder)
numerator
Sum of digits divisible by 9
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
divisible

17. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
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
Middle value
order of operations
even

18. To drop a percent
Divide by 100%
(Amount of decrease/original whole) x100%
distributive property
Middle value

19. 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?
Divide out largest common factor
numerator
Sum of values/number of values
Number of decimal places is total number of decimals places in factors multiplied

20. Average A per B
rational numbers
decimal
Total A/total B
Invert second term - then multiply

21. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
whole number
greatest common factor
Number of decimal places is total number of decimals places in factors multiplied
equal

22. 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
inverse property
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
factor pair
mixed number

23. The smallest number in a group of numbers
least
Probability for each event then multiply individual probabilities together
simplify
divisible

24. Properties of 0

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25. 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)
equal
variables
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
commutative property

26. Relationship in which a number is smaller than another
order of operations
less than
LCM is LCD
terminating decimals

27. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
equal
constants
least common multiple
repeating decimals

28. Be identical or equivalent to
simplify
square number
composite number
equal

29. The largest number in a group of numbers
Last digit 0 or 5
compute
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
greatest

30. A set of operators - numbers - variables and grouping symbols; no equal sign
product
expression
estimate
Sum of values/number of values

31. Dividing fractions
Invert second term - then multiply
quotient
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

32. Answer to a multiplication problem
compatible numbers
product
greater than
Number of desired outcomes/number of total possible outcomes

33. How much a number is worth
value
odd number
mixed number
commutative property

34. 1/5 + 1/4=4/20 +5/20 and 20 is the...
Line up decimal points
common denominator
Sum of digits divisible by 9
expanded form using exponents

35. A fraction whose numerator is greater than its denominator
less than
percent
ratio
improper fraction

36. When a number is larger than the other number. Example 65 > 56
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
number line
digit
greater than

37. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
ratio
digit
Middle value
Line up decimal points

38. Absolute value of number
square number
Multiply by 100%
fraction
Number w/o signs

39. The greatest whole number that is a factor of two or more nonzero whole numbers
greatest common factor
(Amount of decrease/original whole) x100%
prime factorization
odd

40. 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)
associative property
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Divide by 100%
numerator

41. A fraction out of 100 - %
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
denominator
percent

42. Number divisible by 4
order of operations
Greater spread in values
Last two digits divisible by 4
digit

43. Percent increase
compatible numbers
percent
prime factorization
(Amount of increase/original whole) x100%

44. Number divisible by 2
evaluate
Last digit divisible by 2
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
factor pair

45. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
Sum of values/number of values
expanded form using exponents
range
perfect square

46. Median
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
factor
Middle value
Drop percent - move decimal point two place to left

47. Number divisible by 6
Divisible by 2 and 3
Value occurring most frequently
inverse property
variables

48. Number divisible by 3
variables
Greater spread in values
Multiply by 100%
Sum of digits divisible by 3

49. Two factors together that are multiplied to equal a larger number.
factor pair
Number of decimal places is total number of decimals places in factors multiplied
decimal
Last two digits divisible by 4

50. Number divisible by 5
even
estimate
Last digit 0 or 5
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