# Vocabulary-Number Sense Flashcards

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created 12 years ago by fmarlatt
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1

Commutative Property

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sum

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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

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expanded form

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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

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standard form

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

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denominator

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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

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array

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skip count

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set

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subset

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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

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less than

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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