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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 drop a percent
Divide by 100%
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 property
LCM is LCD

2. Percent x whole
Last digit 0 or 5
Part
Last two digits divisible by 4
mixed number

3. 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?
Middle value
denominator
rational numbers
square number

4. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
perfect square
even number
greater than
Total A/total B

5. Adding/subtracting decimals
greatest common factor
compensation
Line up decimal points
improper fraction

6. Dividing decimals
not equal
greatest common factor
proportion
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend

7. Not identical or equivalent to
not equal
factor pair
expression
terminating decimals

8. 1/5 + 1/4=4/20 +5/20 and 20 is the...
improper fraction
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
common denominator
Multiply by 100%

9. 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.
compensation
perfect square
difference
divisible

10. The answer to a multiplication problem
product
equation
estimate
less than

11. Probability
Last digit divisible by 2
Number of desired outcomes/number of total possible outcomes
prime number
Part

12. Two numbers or expressions that mean the same thing - E.g. 2/3=4/6
root numbers
Sum of values/number of values
variables
equivalent

13. A fraction out of 100 - %
Number w/o signs
percent
Sum of values/number of values
Probability for each event then multiply individual probabilities together

14. odd + even
product
factor
odd
Probability for each event then multiply individual probabilities together

15. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3
root numbers
divisibility by 3 rule
expanded form using exponents
range

16. 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
Number w/o signs
irrational numbers
Sum of digits divisible by 3
common denominator

17. To make a percent
product
range
greatest
Multiply by 100%

18. Number divisible by 9
compensation
Last two digits divisible by 4
expression
Sum of digits divisible by 9

19. Average A per B
Sum of values/number of values
Last two digits divisible by 4
Total A/total B
least common multiple

20. A number with more than two factors
divisibility by 3 rule
inverse property
perfect square
composite number

21. Two expressions that are set equal to each other; a number sentence with an equal sign
digit
odd
equation
prime factorization

22. 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
number line
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
Value occurring most frequently
inverse property

23. To find a number that is close to an exact answer - E.g. 23+24 is around 50
product
repeating decimals
estimate
Part

24. Mode
perfect square
even number
Value occurring most frequently
mixed number

25. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
order of operations
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
exponents
greatest

26. 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?
ratio
numerator
quotient
Total A/total B

27. 8x8=64 What is 64?
equivalent
perfect square
least common multiple
proportion

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

29. Able to be divided evenly (without a remainder)
Drop percent - move decimal point two place to left
divisible
Last digit divisible by 2
percent

30. A set of operators - numbers - variables and grouping symbols; no equal sign
expression
product
numerator
odd

31. A line for representing and graphing numbers. Each point on the line corresponds to a number.
root numbers
equivalent
number line
prime factorization

32. A letter that represents a value that may change
range
variables
associative property
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined

33. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
greatest
(Amount of decrease/original whole) x100%
odd number
Last digit divisible by 2

34. Absolute value of number
Drop percent - move decimal point two place to left
Number w/o signs
prime number
Sum of digits divisible by 9

35. The largest number in a group of numbers
divisibility by 3 rule
factor
greatest
Divide out largest common factor

36. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
whole number
Sum of digits divisible by 3
compatible numbers
prime factorization

37. Two factors together that are multiplied to equal a larger number.
factor pair
Multiply by 100%
identity property
Invert second term - then multiply

38. A number that is multiplied by another number to find a producr
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
factor
Part
numerator

39. Properties of numbers btw -1 and 1

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40. To place a fraction in lowest terms
square number
simplify
constants
Divide by 100%

41. A number written in expanded form with the place values written in exponential form - E.g. 2432=2000+400+30+2
simplify
even
estimate
expanded form using exponents

42. The answer to an addition problem
number line
greatest
sum
Probability for each event then multiply individual probabilities together

43. An equation showing 2 ratios are equal
proportion
factor
prime factorization
estimate

44. Comparing positive fractions
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
estimate
improper fraction
Number of decimal places is total number of decimals places in factors multiplied

45. Dividing fractions
sum
whole number
Invert second term - then multiply
range

46. Standard deviation: greater if...
compute
constants
value
Greater spread in values

47. Multiplying fractions
exponents
Reduce diagonally/vertically then multiply numerators and denominators
value
percent

48. Properties of 1 and -1

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49. Properties of 0

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

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Number Sense Vocab

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