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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. How much a number is worth
Number of decimal places is total number of decimals places in factors multiplied
Reduce diagonally/vertically then multiply numerators and denominators
value
repeating decimals

2. To perform a calculation - E.g. 2+2=4
proportion
compute
Sum of digits divisible by 9
sum

3. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
common denominator
Number of desired outcomes/number of total possible outcomes
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
compatible numbers

4. The answer to a multiplication problem
percent
Greater spread in values
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
product

5. Number divisible by 2
Last digit divisible by 2
Sum of values/number of values
root numbers
order of operations

6. Reducing fractions
digit
mixed number
Divide out largest common factor
distributive property

7. To place a fraction in lowest terms
not equal
simplify
Divide by 100%
root numbers

8. A number that is multiplied by another number to find a producr
Part
difference
factor
greatest

9. Simplifying complex fractions: two methods
decimal
Probability for each event then multiply individual probabilities together
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Original whole +/- amount of change

10. Properties of 0

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11. 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)
commutative property
Middle value
greater than
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

12. Relationship in which a number is smaller than another
greatest common factor
order of operations
digit
less than

13. Properties of numbers btw -1 and 1

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14. 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.
compensation
repeating decimals
Number of desired outcomes/number of total possible outcomes
fraction

15. Average value
Reduce diagonally/vertically then multiply numerators and denominators
digit
compute
Sum of values/number of values

16. To change a percent to a decimal
Drop percent - move decimal point two place to left
Value occurring most frequently
Add zeros to decimals until all decimals have same number of digits
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

17. Able to be divided evenly (without a remainder)
divisible
factor
ratio
Total A/total B

18. The answer to an addition problem
Sum of values/number of values
Probability for each event then multiply individual probabilities together
equation
sum

19. Multiplying fractions
Number of desired outcomes/number of total possible outcomes
factor
Reduce diagonally/vertically then multiply numerators and denominators
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

20. A fraction out of 100 - %
Multiply by 100%
percent
Line up decimal points
repeating decimals

21. Comparing decimal fractions
commutative property
simplify
Add zeros to decimals until all decimals have same number of digits
factor

22. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
number line
Number w/o signs
divisibility by 3 rule
distributive property

23. Percent decrease
exponents
(Amount of decrease/original whole) x100%
even number
Probability for each event then multiply individual probabilities together

24. The greatest whole number that is a factor of two or more nonzero whole numbers
divisibility by 3 rule
greatest common factor
exponents
even number

25. Number divisible by 4
Original whole +/- amount of change
Last two digits divisible by 4
range
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

26. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
place value
perfect square
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

27. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
divisible
irrational numbers
even
even number

28. Mode
Value occurring most frequently
Line up decimal points
prime factorization
terminating decimals

29. Adding/subtracting decimals
irrational numbers
root numbers
Line up decimal points
Divisible by 2 and 3

30. A fraction whose numerator is greater than its denominator
prime factorization
variables
improper fraction
digit

31. Natural Numbers - Whole Numbers - Integers - Rational Numbers
ratio
product
least
rational numbers

32. Absolute value of number
Number w/o signs
Last digit 0 or 5
commutative property
inverse property

33. 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)
inverse property
associative property
constants
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

34. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
divisibility by 3 rule
terminating decimals
product
difference

35. The largest number in a group of numbers
sum
Invert second term - then multiply
greatest
divisibility by 3 rule

36. The expression of a number as a product of prime factors; use a factor tree!
factor pair
whole number
sum
prime factorization

37. odd + odd
odd number
even
equivalent
Reduce diagonally/vertically then multiply numerators and denominators

38. Percent increase
proportion
Number of decimal places is total number of decimals places in factors multiplied
greater than
(Amount of increase/original whole) x100%

39. A letter that represents a value that may change
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
variables
denominator
factor

40. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
Sum of digits divisible by 3
order of operations
whole number
root numbers

41. 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?
inverse property
numerator
(Amount of decrease/original whole) x100%
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

42. A comparison of 2 numbers; one form is a fraction
expanded form using exponents
(Amount of decrease/original whole) x100%
ratio
order of operations

43. Average A per B
(Amount of increase/original whole) x100%
Part
Total A/total B
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

44. 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?
Value occurring most frequently
denominator
Middle value
identity property

45. Adding/subtracting fractions
square number
equivalent
repeating decimals
LCM is LCD

46. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
Last digit divisible by 2
quotient
digit
Part

47. Not identical or equivalent to
divisibility by 3 rule
not equal
value
equation

48. A number that results from multiplying a factor by itself
factor
square number
Original whole +/- amount of change
perfect square

49. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
Number of decimal places is total number of decimals places in factors multiplied
least
least common multiple
Drop percent - move decimal point two place to left

50. Dividing fractions
equal
constants
terminating decimals
Invert second term - then multiply