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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. Number divisible by 3
common denominator
equal
prime factorization
Sum of digits divisible by 3

2. 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)
improper fraction
even
perfect square
commutative property

3. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
least common multiple
Sum of digits divisible by 9
difference
denominator

4. A number with one or more digits to the right of the decimal point - E.g. .33
root numbers
decimal
Original whole +/- amount of change
Last two digits divisible by 4

5. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
expanded form using exponents
expression
even
odd number

6. 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
Add zeros to decimals until all decimals have same number of digits
factor

7. Dividing decimals
greatest
compatible numbers
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
composite number

8. Answer to a division problem
Add zeros to decimals until all decimals have same number of digits
quotient
Line up decimal points
prime factorization

9. Natural Numbers - Whole Numbers - Integers - Rational Numbers
composite number
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
rational numbers
proportion

10. Multiple-event probability
square number
even
quotient
Probability for each event then multiply individual probabilities together

11. 1/5 + 1/4=4/20 +5/20 and 20 is the...
ratio
not equal
equal
common denominator

12. Properties of numbers btw -1 and 1

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13. Comparing decimal fractions
prime number
Add zeros to decimals until all decimals have same number of digits
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Number of decimal places is total number of decimals places in factors multiplied

14. A line for representing and graphing numbers. Each point on the line corresponds to a number.
number line
divisibility by 3 rule
perfect square
greatest common factor

15. When a number is larger than the other number. Example 65 > 56
Value occurring most frequently
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
greater than
equation

16. An equation showing 2 ratios are equal
difference
rational numbers
proportion
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value

17. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
constants
least
percent
terminating decimals

18. To find a number that is close to an exact answer - E.g. 23+24 is around 50
composite number
Probability for each event then multiply individual probabilities together
common denominator
estimate

19. Not identical or equivalent to
not equal
terminating decimals
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Sum of digits divisible by 9

20. Absolute value of number
rational numbers
Reduce diagonally/vertically then multiply numerators and denominators
Number w/o signs
Last digit divisible by 2

21. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
composite number
whole number
quotient
equal

22. A letter that represents a value that may change
product
variables
decimal
factor

23. A comparison of 2 numbers; one form is a fraction
digit
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
Last two digits divisible by 4
ratio

24. 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
Middle value
greater than
product

25. Able to be divided evenly (without a remainder)
identity property
divisible
decimal
Divide by 100%

26. A number with more than two factors
composite number
Probability for each event then multiply individual probabilities together
identity property
Last two digits divisible by 4

27. The largest number in a group of numbers
Invert second term - then multiply
greatest
terminating decimals
factor

28. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
odd number
less than
even number
equivalent

29. Reducing fractions
(Amount of increase/original whole) x100%
root numbers
decimal
Divide out largest common factor

30. To drop a percent
whole number
equivalent
Divide by 100%
quotient

31. Adding/subtracting fractions
compensation
less than
LCM is LCD
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

32. Percent x whole
compatible numbers
Divide by 100%
Part
Number w/o signs

33. Be identical or equivalent to
prime number
Total A/total B
equal
Number of desired outcomes/number of total possible outcomes

34. 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
Drop percent - move decimal point two place to left
compute
proportion

35. The difference between the greatest and the least numbers in a set of data.
prime factorization
product
range
factor

36. Dividing fractions
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
1 dividing by number
Invert second term - then multiply

37. Answer to a multiplication problem
Last digit divisible by 2
product
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
perfect square

38. To find the answer for; solve
square number
evaluate
greatest
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

39. Number divisible by 6
Divisible by 2 and 3
value
difference
product

40. Properties of 1 and -1

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41. A number that is multiplied by another number to find a producr
fraction
factor
equation
improper fraction

42. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
(Amount of increase/original whole) x100%
divisibility by 3 rule
factor
expression

43. Number divisible by 5
even number
even
ratio
Last digit 0 or 5

44. The greatest whole number that is a factor of two or more nonzero whole numbers
divisible
sum
commutative property
greatest common factor

45. A shortcut for writing repeated multiplication
common denominator
exponents
expression
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

46. A set of operators - numbers - variables and grouping symbols; no equal sign
expression
Sum of values/number of values
(Amount of increase/original whole) x100%
inverse property

47. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
Number w/o signs
not equal
odd number
fraction

48. The smallest number in a group of numbers
Multiply by 100%
least common multiple
least
root numbers

49. To change a percent to a decimal
least common multiple
Drop percent - move decimal point two place to left
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
denominator

50. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
value
order of operations
repeating decimals
prime number