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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. 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?
denominator
estimate
Middle value
numerator

2. A line for representing and graphing numbers. Each point on the line corresponds to a number.
Greater spread in values
expression
number line
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

3. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
constants
even number
expression
repeating decimals

4. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
order of operations
value
not equal
fraction

5. Reducing fractions
terminating decimals
Divide out largest common factor
square number
Invert second term - then multiply

6. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
not equal
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
whole number
even number

7. Dividing fractions
Sum of values/number of values
Invert second term - then multiply
least
1 dividing by number

8. The answer to a multiplication problem
LCM is LCD
greatest common factor
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
product

9. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
equivalent
Value occurring most frequently
Part
product

10. Not identical or equivalent to
(Amount of decrease/original whole) x100%
not equal
constants
number line

11. Number divisible by 9
Original whole +/- amount of change
compatible numbers
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
Sum of digits divisible by 9

12. Multiplying decimals
digit
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
compensation
Number of decimal places is total number of decimals places in factors multiplied

13. Multiple-event probability
Probability for each event then multiply individual probabilities together
difference
associative property
factor

14. A letter that represents a value that may change
Divisible by 2 and 3
percent
product
variables

15. Properties of 0

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16. Standard deviation: greater if...
Greater spread in values
Original whole +/- amount of change
constants
difference

17. Number divisible by 3
greater than
constants
divisible
Sum of digits divisible by 3

18. To place a fraction in lowest terms
simplify
Middle value
root numbers
compatible numbers

19. A number that results from multiplying a factor by itself
Last digit 0 or 5
square number
divisible
greatest

20. An equation showing 2 ratios are equal
proportion
improper fraction
Last digit divisible by 2
least common multiple

21. A number with more than two factors
Multiply by 100%
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
common denominator
composite number

22. To make a percent
Multiply by 100%
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
divisible
Sum of digits divisible by 9

23. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
(Amount of increase/original whole) x100%
even
expression
odd number

24. When a number is larger than the other number. Example 65 > 56
greater than
irrational numbers
Number of desired outcomes/number of total possible outcomes
Middle value

25. 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
fraction
prime factorization
exponents

26. 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)
compatible numbers
commutative property
Invert second term - then multiply
Sum of digits divisible by 9

27. A fraction out of 100 - %
percent
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
divisible
inverse property

28. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
less than
numerator
expanded form using exponents
rational numbers

29. odd + even
expression
compute
odd
even number

30. Probability
not equal
Number of desired outcomes/number of total possible outcomes
percent
improper fraction

31. Reciprocal of number
equation
1 dividing by number
less than
Sum of values/number of values

32. Natural Numbers - Whole Numbers - Integers - Rational Numbers
rational numbers
order of operations
Last two digits divisible by 4
odd number

33. Adding/subtracting decimals
prime number
numerator
improper fraction
Line up decimal points

34. How much a number is worth
odd
Last two digits divisible by 4
compensation
value

35. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
1 dividing by number
prime number
square number
divisibility by 3 rule

36. Median
root numbers
Drop percent - move decimal point two place to left
Middle value
Number of decimal places is total number of decimals places in factors multiplied

37. 8x8=64 What is 64?
greatest
perfect square
greater than
(Amount of increase/original whole) x100%

38. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
percent
divisibility by 3 rule
(Amount of decrease/original whole) x100%
Last digit divisible by 2

39. Average A per B
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
denominator
Total A/total B
Sum of digits divisible by 3

40. Dividing decimals
numerator
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
least common multiple
Invert second term - then multiply

41. To change a percent to a decimal
composite number
prime number
Drop percent - move decimal point two place to left
less than

42. Comparing positive fractions
improper fraction
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Original whole +/- amount of change
less than

43. 1/5 + 1/4=4/20 +5/20 and 20 is the...
terminating decimals
common denominator
quotient
equal

44. Two factors together that are multiplied to equal a larger number.
root numbers
factor pair
even
digit

45. The greatest whole number that is a factor of two or more nonzero whole numbers
greatest common factor
Total A/total B
least
divisible

46. 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)
equal
expression
compute
associative property

47. The answer to an addition problem
sum
place value
odd
(Amount of increase/original whole) x100%

48. odd + odd
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
compatible numbers
even
expanded form using exponents

49. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
ratio
perfect square
least common multiple
prime factorization

50. To perform a calculation - E.g. 2+2=4
simplify
compute
perfect square
irrational numbers

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Number Sense Vocab

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