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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. To make a percent
identity property
commutative property
Multiply by 100%
factor pair

2. The answer to a subtraction problem
difference
prime number
Drop percent - move decimal point two place to left
equal

3. The greatest whole number that is a factor of two or more nonzero whole numbers
quotient
identity property
Number w/o signs
greatest common factor

4. 1/5 + 1/4=4/20 +5/20 and 20 is the...
Middle value
numerator
common denominator
evaluate

5. Standard deviation: greater if...
Greater spread in values
perfect square
inverse property
Divide out largest common factor

6. The difference between the greatest and the least numbers in a set of data.
Original whole +/- amount of change
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Invert second term - then multiply
range

7. The answer to an addition problem
less than
sum
constants
compatible numbers

8. How much a number is worth
value
common denominator
variables
1 dividing by number

9. Adding/subtracting decimals
(Amount of decrease/original whole) x100%
Value occurring most frequently
Line up decimal points
not equal

10. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
inverse property
common denominator
place value
Reduce diagonally/vertically then multiply numerators and denominators

11. Percent increase
Greater spread in values
least common multiple
(Amount of decrease/original whole) x100%
(Amount of increase/original whole) x100%

12. When a number is larger than the other number. Example 65 > 56
square number
greater than
Number of decimal places is total number of decimals places in factors multiplied
product

13. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
compatible numbers
Sum of digits divisible by 3
Invert second term - then multiply
(Amount of increase/original whole) x100%

14. To find the answer for; solve
(Amount of increase/original whole) x100%
Part
ratio
evaluate

15. Be identical or equivalent to
1 dividing by number
Reduce diagonally/vertically then multiply numerators and denominators
equal
Value occurring most frequently

16. A set of operators - numbers - variables and grouping symbols; no equal sign
difference
Reduce diagonally/vertically then multiply numerators and denominators
proportion
expression

17. A line for representing and graphing numbers. Each point on the line corresponds to a number.
composite number
irrational numbers
factor pair
number line

18. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
even
Drop percent - move decimal point two place to left
exponents
digit

19. Multiple-event probability
Line up decimal points
quotient
expression
Probability for each event then multiply individual probabilities together

20. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Sum of values/number of values
Last digit 0 or 5
even number

21. Multiplying fractions
inverse property
rational numbers
Reduce diagonally/vertically then multiply numerators and denominators
perfect square

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.
Greater spread in values
compensation
quotient
Sum of values/number of values

23. In 4x4=16 - what is 4?
place value
root numbers
perfect square
greatest common factor

24. To place a fraction in lowest terms
simplify
Number w/o signs
Drop percent - move decimal point two place to left
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

25. Median
compensation
Middle value
sum
divisible

26. 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
compute
identity property
inverse property
proportion

27. 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
proportion
Last digit 0 or 5
irrational numbers
place value

28. The answer to a multiplication problem
terminating decimals
greater than
product
rational numbers

29. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
compensation
least common multiple
sum
Number of desired outcomes/number of total possible outcomes

30. odd + even
Probability for each event then multiply individual probabilities together
odd
divisibility by 3 rule
associative property

31. Properties of 0

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32. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
equivalent
evaluate
Last digit divisible by 2
Original whole +/- amount of change

33. To drop a percent
digit
not equal
Divide by 100%
even number

34. To change a percent to a decimal
root numbers
Number of desired outcomes/number of total possible outcomes
Drop percent - move decimal point two place to left
Divide by 100%

35. A value that does not change; any number
Last two digits divisible by 4
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
constants
order of operations

36. Answer to a multiplication problem
expression
whole number
product
order of operations

37. A shortcut for writing repeated multiplication
exponents
Middle value
Number of desired outcomes/number of total possible outcomes
Probability for each event then multiply individual probabilities together

38. Number divisible by 9
Sum of digits divisible by 9
Part
fraction
Last digit divisible by 2

39. Mode
irrational numbers
1 dividing by number
less than
Value occurring most frequently

40. To perform a calculation - E.g. 2+2=4
odd
compute
range
decimal

41. Simplifying complex fractions: two methods
Total A/total B
equivalent
Last digit divisible by 2
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

42. Reciprocal of number
1 dividing by number
repeating decimals
equal
rational numbers

43. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
number line
repeating decimals
expression
LCM is LCD

44. Dividing fractions
perfect square
Invert second term - then multiply
constants
product

45. Percent decrease
Total A/total B
greatest
(Amount of decrease/original whole) x100%
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

46. Not identical or equivalent to
square number
not equal
odd
ratio

47. Multiplying decimals
Total A/total B
constants
sum
Number of decimal places is total number of decimals places in factors multiplied

48. A number with one or more digits to the right of the decimal point - E.g. .33
Number w/o signs
proportion
decimal
constants

49. Properties of 1 and -1

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50. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
Probability for each event then multiply individual probabilities together
product
ratio
whole number

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Number Sense Vocab

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