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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. To place a fraction in lowest terms
ratio
Sum of digits divisible by 3
simplify
1 dividing by number

2. Percent decrease
irrational numbers
(Amount of decrease/original whole) x100%
Line up decimal points
LCM is LCD

3. A number with more than two factors
composite number
mixed number
Value occurring most frequently
Add zeros to decimals until all decimals have same number of digits

4. 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
exponents
identity property
Greater spread in values
root numbers

5. Probability
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
terminating decimals
inverse property
Number of desired outcomes/number of total possible outcomes

6. A line for representing and graphing numbers. Each point on the line corresponds to a number.
fraction
Middle value
number line
Total A/total B

7. To make a percent
simplify
commutative property
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Multiply by 100%

8. To drop a percent
divisibility by 3 rule
proportion
not equal
Divide by 100%

9. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
numerator
digit
order of operations
greater than

10. Comparing decimal fractions
Add zeros to decimals until all decimals have same number of digits
terminating decimals
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
compute

11. Number divisible by 6
Divisible by 2 and 3
Number of desired outcomes/number of total possible outcomes
even
commutative property

12. odd + odd
divisible
evaluate
even
Divide out largest common factor

13. Answer to a multiplication problem
product
Last digit 0 or 5
prime number
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

14. A number made up of a whole number and a fraction
constants
compensation
mixed number
(Amount of increase/original whole) x100%

15. Percent increase
improper fraction
equal
decimal
(Amount of increase/original whole) x100%

16. A shortcut for writing repeated multiplication
factor
composite number
exponents
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

17. 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?
order of operations
equivalent
Sum of values/number of values
numerator

18. The greatest whole number that is a factor of two or more nonzero whole numbers
associative property
greatest common factor
repeating decimals
Invert second term - then multiply

19. To change a percent to a decimal
divisible
terminating decimals
Drop percent - move decimal point two place to left
square number

20. Number divisible by 3
Sum of digits divisible by 3
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Last digit divisible by 2
Last digit 0 or 5

21. The largest number in a group of numbers
inverse property
greatest
value
even number

22. Multiple-event probability
variables
Probability for each event then multiply individual probabilities together
root numbers
Value occurring most frequently

23. Be identical or equivalent to
digit
equal
Sum of digits divisible by 3
least

24. An equation showing 2 ratios are equal
Greater spread in values
proportion
divisible
inverse property

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

26. Number divisible by 5
product
Invert second term - then multiply
Last digit 0 or 5
Number of desired outcomes/number of total possible outcomes

27. 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?
divisible
denominator
Invert second term - then multiply
compute

28. Multiplying decimals
Probability for each event then multiply individual probabilities together
Number of decimal places is total number of decimals places in factors multiplied
Sum of values/number of values
product

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

30. Adding/subtracting decimals
Line up decimal points
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
quotient
expanded form using exponents

31. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
irrational numbers
repeating decimals
rational numbers
equation

32. Two expressions that are set equal to each other; a number sentence with an equal sign
even number
Line up decimal points
equation
product

33. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
Add zeros to decimals until all decimals have same number of digits
compatible numbers
commutative property
common denominator

34. A number that is multiplied by another number to find a producr
even number
factor
denominator
Middle value

35. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
Number of decimal places is total number of decimals places in factors multiplied
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
odd number
decimal

36. A fraction whose numerator is greater than its denominator
decimal
Probability for each event then multiply individual probabilities together
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
improper fraction

37. The answer to an addition problem
quotient
sum
least
associative property

38. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
commutative property
terminating decimals
distributive property
composite number

39. 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
even number
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
whole number

40. A number that results from multiplying a factor by itself
equal
square number
product
perfect square

41. The expression of a number as a product of prime factors; use a factor tree!
order of operations
compatible numbers
prime factorization
Line up decimal points

42. A number with one or more digits to the right of the decimal point - E.g. .33
Last digit divisible by 2
decimal
expression
LCM is LCD

43. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
value
expanded form using exponents
numerator
1 dividing by number

44. 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)
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
commutative property
identity property
compatible numbers

45. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
compensation
expanded form using exponents
prime number
Add zeros to decimals until all decimals have same number of digits

46. Properties of 1 and -1

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47. 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
Sum of digits divisible by 9
Number of decimal places is total number of decimals places in factors multiplied
irrational numbers
factor

48. Not identical or equivalent to
Line up decimal points
not equal
prime factorization
Drop percent - move decimal point two place to left

49. Mode
Value occurring most frequently
associative property
odd number
fraction

50. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
Sum of digits divisible by 3
divisibility by 3 rule
proportion
prime factorization