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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. Adding/subtracting fractions
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
even
Greater spread in values
LCM is LCD

2. Properties of 0

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3. A value that does not change; any number
even
Line up decimal points
Number of desired outcomes/number of total possible outcomes
constants

4. Number divisible by 9
(Amount of decrease/original whole) x100%
greatest
Sum of digits divisible by 9
commutative property

5. The greatest whole number that is a factor of two or more nonzero whole numbers
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
simplify
greatest common factor

6. Reducing fractions
Drop percent - move decimal point two place to left
repeating decimals
Divide out largest common factor
inverse property

7. Able to be divided evenly (without a remainder)
divisible
Middle value
Line up decimal points
denominator

8. odd + even
value
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
odd
whole number

9. 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)=
Number of desired outcomes/number of total possible outcomes
exponents
percent
distributive property

10. A letter that represents a value that may change
order of operations
rational numbers
variables
constants

11. The expression of a number as a product of prime factors; use a factor tree!
equation
prime factorization
Invert second term - then multiply
fraction

12. Multiple-event probability
Probability for each event then multiply individual probabilities together
Number w/o signs
least
improper fraction

13. Adding/subtracting decimals
Line up decimal points
identity property
common denominator
Total A/total B

14. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
value
odd number
Value occurring most frequently
proportion

15. Percent decrease
Number w/o signs
even number
equivalent
(Amount of decrease/original whole) x100%

16. Number divisible by 6
difference
least
Total A/total B
Divisible by 2 and 3

17. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
divisibility by 3 rule
constants
difference
commutative property

18. A number with one or more digits to the right of the decimal point - E.g. .33
decimal
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
equivalent

19. New whole
Original whole +/- amount of change
Number of desired outcomes/number of total possible outcomes
constants
compatible numbers

20. Multiplying decimals
constants
Number of decimal places is total number of decimals places in factors multiplied
percent
greatest

21. How much a number is worth
value
Divide by 100%
Divisible by 2 and 3
Number of desired outcomes/number of total possible outcomes

22. 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.
Last digit 0 or 5
estimate
constants
compensation

23. A fraction out of 100 - %
percent
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
root numbers
Part

24. A line for representing and graphing numbers. Each point on the line corresponds to a number.
Part
number line
divisible
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

25. Number divisible by 5
Number of decimal places is total number of decimals places in factors multiplied
Last digit 0 or 5
Sum of digits divisible by 9
Probability for each event then multiply individual probabilities together

26. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
common denominator
expanded form using exponents
(Amount of decrease/original whole) x100%
estimate

27. The difference between the greatest and the least numbers in a set of data.
denominator
range
compute
Reduce diagonally/vertically then multiply numerators and denominators

28. Comparing positive fractions
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Divide out largest common factor
associative property
Total A/total B

29. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
compatible numbers
quotient
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
terminating decimals

30. Dividing fractions
prime factorization
associative property
Value occurring most frequently
Invert second term - then multiply

31. An equation showing 2 ratios are equal
Last digit 0 or 5
quotient
proportion
Divide by 100%

32. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
exponents
inverse property
least common multiple
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

33. To make a percent
Multiply by 100%
value
even
Value occurring most frequently

34. 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
order of operations
compute
identity property
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

35. Two factors together that are multiplied to equal a larger number.
factor pair
Number of decimal places is total number of decimals places in factors multiplied
Number of desired outcomes/number of total possible outcomes
percent

36. Properties of 1 and -1

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37. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
product
order of operations
Divide by 100%
whole number

38. A number that is multiplied by another number to find a producr
denominator
Drop percent - move decimal point two place to left
factor
whole number

39. When a number is larger than the other number. Example 65 > 56
greater than
numerator
Number of decimal places is total number of decimals places in factors multiplied
Drop percent - move decimal point two place to left

40. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
compatible numbers
greatest common factor
Number of desired outcomes/number of total possible outcomes
whole number

41. Percent x whole
expanded form using exponents
Part
less than
Reduce diagonally/vertically then multiply numerators and denominators

42. To change a percent to a decimal
Drop percent - move decimal point two place to left
terminating decimals
factor pair
value

43. Mode
range
repeating decimals
commutative property
Value occurring most frequently

44. Two expressions that are set equal to each other; a number sentence with an equal sign
commutative property
value
equation
Line up decimal points

45. Answer to a multiplication problem
compensation
1 dividing by number
Sum of values/number of values
product

46. Percent increase
prime factorization
(Amount of increase/original whole) x100%
divisible
factor pair

47. Standard deviation: greater if...
Total A/total B
sum
Greater spread in values
odd

48. To drop a percent
LCM is LCD
even number
equation
Divide by 100%

49. A number that represents a part of a whole or a group; also means 'divided by' - E.g. 1/2 -3/4.5/6
whole number
fraction
Sum of digits divisible by 3
quotient

50. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided 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
Part
even number
LCM is LCD