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Number Sense Vocab

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. 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)
percent
associative property
even
Reduce diagonally/vertically then multiply numerators and denominators

2. When a number is larger than the other number. Example 65 > 56
greater than
simplify
Number w/o signs
value

3. The expression of a number as a product of prime factors; use a factor tree!
prime factorization
Middle value
distributive property
equivalent

4. odd + even
associative property
denominator
odd
Middle value

5. Multiple-event probability
Probability for each event then multiply individual probabilities together
digit
Divisible by 2 and 3
Divide by 100%

6. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
simplify
divisibility by 3 rule
greatest common factor
variables

7. Average value
Sum of values/number of values
product
Last digit 0 or 5
value

8. odd + odd
commutative property
prime number
least
even

9. Number divisible by 3
compute
Line up decimal points
Sum of digits divisible by 3
factor pair

10. To perform a calculation - E.g. 2+2=4
compute
equivalent
Value occurring most frequently
estimate

11. A fraction whose numerator is greater than its denominator
compatible numbers
Last digit 0 or 5
improper fraction
prime number

12. Probability
Greater spread in values
Number of desired outcomes/number of total possible outcomes
Line up decimal points
distributive property

13. Simplifying complex fractions: two methods
not equal
number line
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
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

14. Percent x whole
Part
sum
constants
odd

15. Median
Add zeros to decimals until all decimals have same number of digits
Divide out largest common factor
Middle value
Value occurring most frequently

16. 8x8=64 What is 64?
greatest
perfect square
Reduce diagonally/vertically then multiply numerators and denominators
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

17. How much a number is worth
Original whole +/- amount of change
exponents
value
Last two digits divisible by 4

18. The largest number in a group of numbers
Middle value
greatest
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
estimate

19. 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
inverse property
irrational numbers
factor
least common multiple

20. Properties of 0

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21. Multiplying decimals
Sum of digits divisible by 9
Number of decimal places is total number of decimals places in factors multiplied
commutative property
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

22. A number with more than two factors
composite number
compute
equivalent
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

23. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
commutative property
repeating decimals
fraction
decimal

24. Adding/subtracting fractions
Sum of values/number of values
LCM is LCD
commutative property
repeating decimals

25. Dividing fractions
distributive property
inverse property
decimal
Invert second term - then multiply

26. Number divisible by 5
rational numbers
Last digit 0 or 5
decimal
product

27. Reducing fractions
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
greatest common factor
number line
Divide out largest common factor

28. A value that does not change; any number
expression
constants
(Amount of decrease/original whole) x100%
distributive property

29. 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)
commutative property
square number
prime number
Middle value

30. In 4x4=16 - what is 4?
constants
equivalent
denominator
root numbers

31. Number divisible by 9
decimal
Divisible by 2 and 3
odd
Sum of digits divisible by 9

32. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
divisible
associative property
expanded form using exponents
Add zeros to decimals until all decimals have same number of digits

33. A shortcut for writing repeated multiplication
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
simplify
odd
exponents

34. Answer to a multiplication problem
product
Drop percent - move decimal point two place to left
Divide by 100%
Add zeros to decimals until all decimals have same number of digits

35. The answer to a subtraction problem
odd
difference
equal
exponents

36. Be identical or equivalent to
equal
1 dividing by number
equation
even number

37. Not identical or equivalent to
expanded form using exponents
range
repeating decimals
not equal

38. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
(Amount of increase/original whole) x100%
LCM is LCD
even number
odd number

39. Answer to a division problem
least
variables
LCM is LCD
quotient

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

41. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
greatest
equivalent
variables
composite number

42. Two expressions that are set equal to each other; a number sentence with an equal sign
value
number line
equation
variables

43. Multiplying fractions
inverse property
Reduce diagonally/vertically then multiply numerators and denominators
associative property
Invert second term - then multiply

44. 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
proportion
expression
equivalent

45. Dividing decimals
compute
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
root numbers
odd

46. Mode
Value occurring most frequently
Multiply by 100%
order of operations
LCM is LCD

47. Properties of numbers btw -1 and 1

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48. 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?
inverse property
Last two digits divisible by 4
numerator
Divisible by 2 and 3

49. Percent increase
number line
Invert second term - then multiply
LCM is LCD
(Amount of increase/original whole) x100%

50. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
difference
digit
(Amount of increase/original whole) x100%
estimate