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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. Not identical or equivalent to
terminating decimals
proportion
(Amount of decrease/original whole) x100%
not equal

2. To find the answer for; solve
root numbers
greatest
evaluate
equivalent

3. odd + even
Divide by 100%
estimate
odd
Original whole +/- amount of change

4. Adding/subtracting decimals
Line up decimal points
1 dividing by number
sum
Invert second term - then multiply

5. Two expressions that are set equal to each other; a number sentence with an equal sign
equation
root numbers
greatest
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

6. Answer to a multiplication problem
product
1 dividing by number
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
root numbers

7. To perform a calculation - E.g. 2+2=4
Value occurring most frequently
compute
variables
Reduce diagonally/vertically then multiply numerators and denominators

8. Multiplying decimals
proportion
Number of decimal places is total number of decimals places in factors multiplied
quotient
Original whole +/- amount of change

9. Average A per B
Middle value
Total A/total B
rational numbers
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

10. Cannot be expressed in the form a/b. Include square roots of whole numbers that are not perfect squares and non terminating decimals that do not repeat. pi
irrational numbers
least common multiple
prime factorization
numerator

11. Answer to a division problem
compute
Greater spread in values
Line up decimal points
quotient

12. Properties of 0

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13. Percent increase
Original whole +/- amount of change
least common multiple
Value occurring most frequently
(Amount of increase/original whole) x100%

14. Number divisible by 4
Last two digits divisible by 4
Last digit divisible by 2
Probability for each event then multiply individual probabilities together
Middle value

15. A letter that represents a value that may change
variables
perfect square
odd
repeating decimals

16. Multiplying fractions
not equal
Reduce diagonally/vertically then multiply numerators and denominators
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
improper fraction

17. An equation showing 2 ratios are equal
associative property
numerator
proportion
odd number

18. Simplifying complex fractions: two methods
Value occurring most frequently
Number w/o signs
improper fraction
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

19. The greatest whole number that is a factor of two or more nonzero whole numbers
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
greatest common factor
decimal
commutative property

20. Two factors together that are multiplied to equal a larger number.
range
factor pair
Invert second term - then multiply
(Amount of decrease/original whole) x100%

21. 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)
Probability for each event then multiply individual probabilities together
odd number
Number of decimal places is total number of decimals places in factors multiplied
associative property

22. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
Drop percent - move decimal point two place to left
compensation
digit
decimal

23. odd + odd
compatible numbers
even
expression
factor pair

24. 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
Last digit divisible by 2
even
identity property
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

25. Dividing decimals
Last digit 0 or 5
root numbers
improper fraction
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

26. The answer to a subtraction problem
inverse property
difference
expression
less than

27. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
place value
sum
digit
compensation

28. Median
Middle value
Sum of digits divisible by 9
factor
expression

29. A shortcut for writing repeated multiplication
divisibility by 3 rule
exponents
product
factor pair

30. Probability
Number of desired outcomes/number of total possible outcomes
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
even
repeating decimals

31. Number divisible by 3
Sum of digits divisible by 3
product
even
commutative property

32. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
1 dividing by number
percent
prime number
estimate

33. 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)=
expression
distributive property
inverse property
odd

34. 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
variables
inverse property
difference
Sum of digits divisible by 3

35. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
terminating decimals
inverse property
expanded form using exponents
product

36. A fraction whose numerator is greater than its denominator
improper fraction
range
Invert second term - then multiply
associative property

37. A number made up of a whole number and a fraction
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
percent
mixed number
sum

38. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
(Amount of decrease/original whole) x100%
Drop percent - move decimal point two place to left
not equal
odd number

39. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
Greater spread in values
simplify
constants
order of operations

40. 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
factor pair
Divisible by 2 and 3
Probability for each event then multiply individual probabilities together

41. Percent x whole
Part
Total A/total B
Last two digits divisible by 4
odd number

42. 8x8=64 What is 64?
distributive property
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
perfect square
ratio

43. Comparing decimal fractions
Add zeros to decimals until all decimals have same number of digits
expanded form using exponents
prime number
Sum of digits divisible by 3

44. Percent decrease
equation
inverse property
common denominator
(Amount of decrease/original whole) x100%

45. A number with one or more digits to the right of the decimal point - E.g. .33
digit
composite number
decimal
root numbers

46. To find a number that is close to an exact answer - E.g. 23+24 is around 50
digit
not equal
Part
estimate

47. To place a fraction in lowest terms
value
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Divisible by 2 and 3
simplify

48. A line for representing and graphing numbers. Each point on the line corresponds to a number.
number line
improper fraction
Value occurring most frequently
percent

49. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
LCM is LCD
(Amount of decrease/original whole) x100%
least common multiple
denominator

50. Number divisible by 9
Sum of digits divisible by 9
Number w/o signs
factor pair
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