# Vocabulary-Number Sense Flashcards

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created 12 years ago by fmarlatt
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Commutative Property 2 3 4 5

sum 6

round ABOUT how many or how much.
Closest number ending with 0.

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estimate To give a number or answer that tells about how many or how much.

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compatible numbers Numbers that are easy to add, subtract, multiply, or divide mentally.

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fact family a group of related facts using the same numbers

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difference The answer to a subtraction problem.

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equivalent equal to

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compute 13

expanded form 14

inverse operations Two operations that are the opposite of each other.

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compensation adding and subtracting the same number to make the sum or difference easier to find

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numerator 17

standard form a way to write a number only showing its digits
Example: 385

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denominator 19

word form a number written in words

four thousand, six hundred, thirty two

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base 10 place value the value of the place a digit has in a number

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digits the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8,and 9, used to write numbers

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compare to find out which number is greater and which number is less

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ordinal number a number used to show the order of people or objects

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decimal point a dot that separates dollars from cents and ones from tenths in a number
Example: \$1.95, 1.9

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integers 26

array 27

skip count 28

set 29

subset 30

whole numbers no fraction, no decimals, no negatives

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at least

as much as, equal to or greater than

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at most

no more than, equal to or less than

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factor a whole number that multiplies with another number to make a third number

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fraction any part of a group, number or whole

Fractions have a numerator and a denominator

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greater than 36

less than 37

mixed number a whole number and a fraction

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model

...

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multiplication an mathematical operation where a number is added to itself several times

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division a math operation where a number is shared or grouped into equal parts

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a math operation where 2 or more groups are combined

45 + 13 = 58

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subtraction

a math operation that takes one quantity away from another

63 - 19 = 44

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number sentence

a mathematical sentence using symbols and numbers

an equation or a inequality with <, >, or =

2 + 3 = 5
1 + 3 > 2
8 - 2 < 7

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place value the value of a digit depending on its place in a number

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reasonable

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regrouping carrying in addition and borrowing in subtraction

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sharing equally

fair share, dividing so that each group is equal

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classify

to make a group based on similar characteristics

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order arranged according to size, amount or value

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distributive property 6 x 27 =

breaking apart multiplication problems into similar problems