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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. Median
compute
Middle value
rational numbers
Original whole +/- amount of change

2. 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
identity property
prime number
order of operations
Divisible by 2 and 3

3. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
Divisible by 2 and 3
Sum of digits divisible by 3
divisibility by 3 rule
quotient

4. Simplifying complex fractions: two methods
Add zeros to decimals until all decimals have same number of digits
difference
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
common denominator

5. A number with one or more digits to the right of the decimal point - E.g. .33
divisibility by 3 rule
expanded form using exponents
decimal
prime factorization

6. A shortcut for writing repeated multiplication
exponents
Number of decimal places is total number of decimals places in factors multiplied
identity property
range

7. To find a number that is close to an exact answer - E.g. 23+24 is around 50
estimate
Total A/total B
whole number
prime number

8. 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.
equation
compensation
factor pair
range

9. When a number is larger than the other number. Example 65 > 56
greater than
Greater spread in values
irrational numbers
common denominator

10. Percent decrease
prime factorization
compatible numbers
(Amount of decrease/original whole) x100%
distributive property

11. Able to be divided evenly (without a remainder)
Divide out largest common factor
Sum of digits divisible by 9
divisible
Original whole +/- amount of change

12. Adding/subtracting fractions
LCM is LCD
Line up decimal points
Last digit divisible by 2
factor

13. How much a number is worth
value
equation
Last two digits divisible by 4
Drop percent - move decimal point two place to left

14. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
equal
1 dividing by number
prime number
(Amount of decrease/original whole) x100%

15. Multiple-event probability
Multiply by 100%
denominator
Probability for each event then multiply individual probabilities together
least

16. An equation showing 2 ratios are equal
proportion
even
Middle value
denominator

17. Dividing fractions
perfect square
Invert second term - then multiply
equation
Divide out largest common factor

18. The answer to a multiplication problem
least common multiple
product
order of operations
not equal

19. 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?
proportion
Reduce diagonally/vertically then multiply numerators and denominators
denominator
Number of desired outcomes/number of total possible outcomes

20. Mode
Value occurring most frequently
ratio
distributive property
exponents

21. A number that is multiplied by another number to find a producr
factor
decimal
Last digit 0 or 5
Last digit divisible by 2

22. A set of operators - numbers - variables and grouping symbols; no equal sign
expression
irrational numbers
root numbers
expanded form using exponents

23. To change a percent to a decimal
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
estimate
Drop percent - move decimal point two place to left

24. Properties of 0

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25. The greatest whole number that is a factor of two or more nonzero whole numbers
greatest common factor
distributive property
odd
Divide out largest common factor

26. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
fraction
Add zeros to decimals until all decimals have same number of digits
expression
expanded form using exponents

27. To make a percent
root numbers
Multiply by 100%
product
Number of decimal places is total number of decimals places in factors multiplied

28. A number that results from multiplying a factor by itself
square number
greatest common factor
product
Multiply by 100%

29. A comparison of 2 numbers; one form is a fraction
mixed number
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
ratio
not equal

30. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
Value occurring most frequently
Greater spread in values
greatest
place value

31. Two expressions that are set equal to each other; a number sentence with an equal sign
Probability for each event then multiply individual probabilities together
equation
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
(Amount of decrease/original whole) x100%

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

33. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
decimal
estimate
odd
even number

34. In 4x4=16 - what is 4?
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
root numbers
least common multiple
divisibility by 3 rule

35. 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?
(Amount of decrease/original whole) x100%
numerator
Last digit divisible by 2
even

36. Percent increase
mixed number
Number of decimal places is total number of decimals places in factors multiplied
decimal
(Amount of increase/original whole) x100%

37. Relationship in which a number is smaller than another
less than
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
identity property

38. To drop a percent
Divide by 100%
distributive property
Part
digit

39. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
Number of desired outcomes/number of total possible outcomes
Last digit divisible by 2
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
terminating decimals

40. New whole
inverse property
Sum of digits divisible by 9
Original whole +/- amount of change
range

41. 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
Middle value
Last two digits divisible by 4
inverse property
expanded form using exponents

42. Natural Numbers - Whole Numbers - Integers - Rational Numbers
expanded form using exponents
irrational numbers
equivalent
rational numbers

43. Be identical or equivalent to
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
irrational numbers
compensation
equal

44. Multiplying decimals
Number of decimal places is total number of decimals places in factors multiplied
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
percent

45. A value that does not change; any number
improper fraction
prime factorization
1 dividing by number
constants

46. To perform a calculation - E.g. 2+2=4
1 dividing by number
number line
compute
Part

47. The difference between the greatest and the least numbers in a set of data.
Value occurring most frequently
Divide by 100%
range
identity property

48. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
whole number
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
factor
numerator

49. A fraction out of 100 - %
estimate
even
percent
common denominator

50. The answer to an addition problem
even
sum
rational numbers
even number