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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 number with more than two factors
divisible
simplify
repeating decimals
composite number

2. Simplifying complex fractions: two methods
greatest
sum
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

3. The difference between the greatest and the least numbers in a set of data.
range
(Amount of increase/original whole) x100%
repeating decimals
compatible numbers

4. Relationship in which a number is smaller than another
sum
Divisible by 2 and 3
range
less than

5. Adding/subtracting decimals
Line up decimal points
mixed number
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
least common multiple

6. Percent decrease
Greater spread in values
even number
(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

7. Adding/subtracting fractions
product
LCM is LCD
divisible
decimal

8. Two factors together that are multiplied to equal a larger number.
Last digit divisible by 2
factor pair
rational numbers
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

9. A number without fractions; an integer- E.g. 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9...
least common multiple
constants
prime number
whole number

10. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.
terminating decimals
greatest
equation
Number w/o signs

11. In 4x4=16 - what is 4?
less than
constants
root numbers
not equal

12. Multiplying fractions
equivalent
factor
improper fraction
Reduce diagonally/vertically then multiply numerators and denominators

13. Standard deviation: greater if...
1 dividing by number
range
greater than
Greater spread in values

14. 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)
Number of decimal places is total number of decimals places in factors multiplied
commutative property
Line up decimal points
greatest common factor

15. Percent increase
value
less than
(Amount of increase/original whole) x100%
common denominator

16. 1/5 + 1/4=4/20 +5/20 and 20 is the...
root numbers
equation
common denominator
Last digit divisible by 2

17. odd + even
digit
proportion
odd
variables

18. Properties of 0

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19. A number made up of a whole number and a fraction
evaluate
compute
mixed number
perfect square

20. A shortcut for writing repeated multiplication
Sum of digits divisible by 9
exponents
product
less than

21. When a number is larger than the other number. Example 65 > 56
greater than
Reduce diagonally/vertically then multiply numerators and denominators
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
decimal

22. Number divisible by 2
numerator
constants
proportion
Last digit divisible by 2

23. The greatest whole number that is a factor of two or more nonzero whole numbers
whole number
least common multiple
greatest common factor
greatest

24. How much a number is worth
value
square number
product
expanded form using exponents

25. To find a number that is close to an exact answer - E.g. 23+24 is around 50
decimal
Line up decimal points
factor
estimate

26. Number divisible by 5
numerator
Last digit 0 or 5
even
equal

27. Natural Numbers - Whole Numbers - Integers - Rational Numbers
rational numbers
range
Reduce diagonally/vertically then multiply numerators and denominators
divisible

28. Reducing fractions
greatest common factor
divisible
Divide out largest common factor
equivalent

29. 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)=
Total A/total B
distributive property
terminating decimals
greater than

30. Probability
greatest common factor
compatible numbers
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Number of desired outcomes/number of total possible outcomes

31. Able to be divided evenly (without a remainder)
ratio
exponents
percent
divisible

32. A whole number such as 1 - 3 - 5 and so on that cannot be evenly divisible by 2
composite number
odd number
less than
equal

33. 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
product
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
simplify

34. A number with one or more digits to the right of the decimal point - E.g. .33
identity property
Sum of digits divisible by 9
decimal
odd number

35. Comparing decimal fractions
identity property
perfect square
odd
Add zeros to decimals until all decimals have same number of digits

36. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5
(Amount of increase/original whole) x100%
compatible numbers
divisible
(Amount of decrease/original whole) x100%

37. Be identical or equivalent to
equal
even number
proportion
expression

38. The expression of a number as a product of prime factors; use a factor tree!
compatible numbers
digit
prime factorization
compute

39. Properties of 1 and -1

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40. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
repeating decimals
improper fraction
prime number
perfect square

41. The answer to a multiplication problem
Value occurring most frequently
greatest
Last two digits divisible by 4
product

42. A comparison of 2 numbers; one form is a fraction
difference
Number w/o signs
Last two digits divisible by 4
ratio

43. A letter that represents a value that may change
variables
place value
divisible
root numbers

44. Dividing fractions
Invert second term - then multiply
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
difference
irrational numbers

45. odd + odd
Sum of values/number of values
product
even
Value occurring most frequently

46. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2
digit
expression
even number
1 dividing by number

47. To find the answer for; solve
evaluate
constants
odd
divisibility by 3 rule

48. Answer to a division problem
terminating decimals
Greater spread in values
Number of desired outcomes/number of total possible outcomes
quotient

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
1 dividing by number
fraction
commutative property
Add zeros to decimals until all decimals have same number of digits

50. Number divisible by 6
Divisible by 2 and 3
root numbers
divisible
constants

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Number Sense Vocab

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