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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. Properties of 1 and -1

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2. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
prime factorization
Middle value
equal
least common multiple

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

4. Number divisible by 4
associative property
Last two digits divisible by 4
order of operations
product

5. A letter that represents a value that may change
variables
even
compute
Last two digits divisible by 4

6. Median
Number of desired outcomes/number of total possible outcomes
quotient
Middle value
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

7. Number divisible by 6
Middle value
Probability for each event then multiply individual probabilities together
Divisible by 2 and 3
even number

8. A number with more than two factors
compatible numbers
number line
Add zeros to decimals until all decimals have same number of digits
composite number

9. Multiplying decimals
range
Middle value
terminating decimals
Number of decimal places is total number of decimals places in factors multiplied

10. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
compensation
terminating decimals
Reduce diagonally/vertically then multiply numerators and denominators
rational numbers

11. Reducing fractions
greatest
even
Divide out largest common factor
expanded form using exponents

12. Dividing decimals
Number of desired outcomes/number of total possible outcomes
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
number line
Number w/o signs

13. To perform a calculation - E.g. 2+2=4
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
compute
equation
LCM is LCD

14. A set of operators - numbers - variables and grouping symbols; no equal sign
Sum of values/number of values
place value
Part
expression

15. odd + odd
even
least common multiple
Divide by 100%
estimate

16. Able to be divided evenly (without a remainder)
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
divisible
expanded form using exponents
greater than

17. Percent x whole
simplify
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Part
factor pair

18. An equation showing 2 ratios are equal
common denominator
Reduce diagonally/vertically then multiply numerators and denominators
whole number
proportion

19. The answer to a multiplication problem
(Amount of decrease/original whole) x100%
associative property
product
even number

20. Number divisible by 5
1 dividing by number
root numbers
Last digit 0 or 5
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

21. A number that is multiplied by another number to find a producr
factor
product
irrational numbers
commutative property

22. Adding/subtracting fractions
prime number
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
digit
LCM is LCD

23. When a number is larger than the other number. Example 65 > 56
estimate
evaluate
greater than
least

24. Dividing fractions
mixed number
distributive property
inverse property
Invert second term - then multiply

25. A number that results from multiplying a factor by itself
equal
Greater spread in values
square number
odd

26. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
prime number
equation
mixed number
Sum of values/number of values

27. Percent increase
odd number
denominator
(Amount of increase/original whole) x100%
Original whole +/- amount of change

28. Answer to a division problem
divisibility by 3 rule
quotient
Number of decimal places is total number of decimals places in factors multiplied
root numbers

29. A line for representing and graphing numbers. Each point on the line corresponds to a number.
number line
Divide by 100%
repeating decimals
variables

30. To change a percent to a decimal
not equal
Drop percent - move decimal point two place to left
difference
denominator

31. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
greatest
Drop percent - move decimal point two place to left
place value
mixed number

32. The greatest whole number that is a factor of two or more nonzero whole numbers
greatest common factor
improper fraction
proportion
commutative property

33. Reciprocal of number
greatest common factor
1 dividing by number
Sum of digits divisible by 9
product

34. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
Original whole +/- amount of change
greater than
compatible numbers
quotient

35. 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)
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
associative property
simplify
Number of desired outcomes/number of total possible outcomes

36. Natural Numbers - Whole Numbers - Integers - Rational Numbers
factor
variables
rational numbers
less than

37. Not identical or equivalent to
greatest common factor
square number
Divide out largest common factor
not equal

38. To drop a percent
Divide by 100%
composite number
number line
expanded form using exponents

39. Standard deviation: greater if...
numerator
square number
estimate
Greater spread in values

40. A shortcut for writing repeated multiplication
exponents
Multiply by 100%
expression
prime number

41. How much a number is worth
Sum of digits divisible by 9
associative property
proportion
value

42. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
improper fraction
factor pair
fraction
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

43. Adding/subtracting decimals
Line up decimal points
even
evaluate
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

44. A fraction out of 100 - %
Line up decimal points
percent
factor
ratio

45. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
Greater spread in values
equivalent
LCM is LCD
odd number

46. odd + even
(Amount of increase/original whole) x100%
odd
Last digit divisible by 2
Add zeros to decimals until all decimals have same number of digits

47. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
divisible
composite number
repeating decimals
proportion

48. Absolute value of number
Greater spread in values
factor pair
Number w/o signs
(Amount of increase/original whole) x100%

49. Multiple-event probability
(Amount of increase/original whole) x100%
Probability for each event then multiply individual probabilities together
denominator
Reduce diagonally/vertically then multiply numerators and denominators

50. To find the answer for; solve
odd number
evaluate
percent
Line up decimal points