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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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1. Two factors together that are multiplied to equal a larger number.
factor pair
whole number
compute
Sum of digits divisible by 9

2. Number divisible by 9
less than
greatest
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

3. Reducing fractions
greatest common factor
even number
Divide out largest common factor
Divide by 100%

4. Median
factor pair
greater than
Middle value
Original whole +/- amount of change

5. Average value
prime factorization
Sum of values/number of values
(Amount of increase/original whole) x100%
identity property

6. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)
divisible
least common multiple
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
Divisible by 2 and 3

7. In 4x4=16 - what is 4?
Sum of digits divisible by 9
root numbers
denominator
whole number

8. Reciprocal of number
irrational numbers
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
least
1 dividing by number

9. Number divisible by 4
Invert second term - then multiply
divisible
equation
Last two digits divisible by 4

10. An equation showing 2 ratios are equal
(Amount of decrease/original whole) x100%
(Amount of increase/original whole) x100%
square number
proportion

11. 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
least
Greater spread in values
Sum of digits divisible by 3

12. A set of operators - numbers - variables and grouping symbols; no equal sign
factor pair
expression
difference
sum

13. The expression of a number as a product of prime factors; use a factor tree!
prime factorization
compute
less than
root numbers

14. Adding/subtracting fractions
simplify
LCM is LCD
(Amount of increase/original whole) x100%
Invert second term - then multiply

15. Dividing decimals
estimate
Multiply by power of 10 so divisor is integer; decimal point is above that in dividend
even number
rational numbers

16. To place a fraction in lowest terms
mixed number
simplify
ratio
quotient

17. Average A per B
Line up decimal points
not equal
Total A/total B
value

18. 1/5 + 1/4=4/20 +5/20 and 20 is the...
compensation
Middle value
common denominator
fraction

19. The largest number in a group of numbers
Number of decimal places is total number of decimals places in factors multiplied
less than
greatest
Value occurring most frequently

20. Natural Numbers - Whole Numbers - Integers - Rational Numbers
identity property
rational numbers
Divisible by 2 and 3
even number

21. Be identical or equivalent to
difference
Number of decimal places is total number of decimals places in factors multiplied
equal
simplify

22. A fraction out of 100 - %
product
denominator
percent
Last digit divisible by 2

23. To change a percent to a decimal
compute
Drop percent - move decimal point two place to left
whole number
least common multiple

24. 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
expanded form using exponents
inverse property
associative property
repeating decimals

25. Answer to a division problem
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately
Divisible by 2 and 3
Greater spread in values
quotient

26. A number with more than two factors
composite number
Last digit divisible by 2
estimate
Number w/o signs

27. A letter that represents a value that may change
product
Value occurring most frequently
compute
variables

28. Properties of 1 and -1

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29. A shortcut for writing repeated multiplication
least common multiple
Sum of values/number of values
exponents
greatest

30. To find the answer for; solve
Number of desired outcomes/number of total possible outcomes
greatest common factor
evaluate
Distributive law: multiply by LCM of all denominators; treat numerator/denominator separately

31. Relationship in which a number is smaller than another
perfect square
less than
Invert second term - then multiply
divisibility by 3 rule

32. odd + odd
even
repeating decimals
Divide by 100%
odd number

33. A number with one or more digits to the right of the decimal point - E.g. .33
decimal
greater than
rational numbers
Middle value

34. A number made up of a whole number and a fraction
Reduce diagonally/vertically then multiply numerators and denominators
mixed number
compatible numbers
least

35. Mode
commutative property
constants
Value occurring most frequently
ratio

36. Multiplying decimals
Number of decimal places is total number of decimals places in factors multiplied
Total A/total B
Drop percent - move decimal point two place to left
prime factorization

37. Not identical or equivalent to
value
number line
divisibility by 3 rule
not equal

38. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...
Number of desired outcomes/number of total possible outcomes
divisibility by 3 rule
prime number
(Amount of increase/original whole) x100%

39. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers
place value
Divisible by 2 and 3
Value occurring most frequently
identity property

40. The difference between the greatest and the least numbers in a set of data.
expanded form using exponents
range
Adding/subtracting 0 from number doesn't change number; number multiplied by 0 is 0; division by 0 undefined
divisible

41. Any of the symbols used to write numbers (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9)
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
digit
terminating decimals
Probability for each event then multiply individual probabilities together

42. A comparison of 2 numbers; one form is a fraction
ratio
compute
Last digit divisible by 2
1 dividing by number

43. To find a number that is close to an exact answer - E.g. 23+24 is around 50
estimate
divisibility by 3 rule
least common multiple
even number

44. To perform a calculation - E.g. 2+2=4
compute
Greater spread in values
Part
odd number

45. PEMDAS - Parentheses - Exponents - Multiplication & Division (L to R) - Addition & Subtraction (L to R)
order of operations
simplify
Same numerators: fraction w/ smaller denominator has larger value; Same denominators: fraction w/ larger numerator has larger value
identity property

46. 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)=
composite number
Add zeros to decimals until all decimals have same number of digits
proportion
distributive property

47. Rational numbers in decimal form that have a block of on or more digits that repeat continuously
Divisible by 2 and 3
repeating decimals
odd number
distributive property

48. The answer to an addition problem
Invert second term - then multiply
Divide out largest common factor
Last two digits divisible by 4
sum

49. 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?
expression
divisibility by 3 rule
Part
numerator

50. Adding/subtracting decimals
exponents
inverse property
number line
Line up decimal points

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Number Sense Vocab

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