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3.NBT.2

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round

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make a number simpler but close to it's real value

make a number simpler but close to it's real value

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Terms in this set (15)

make a number simpler but close to it's real value

Image: round

benchmark numbers

numbers that are easy to work with such as 10, 20, 30

Image: benchmark numbers

half way point between two round numbers

Image: mid point

a way of making sure your answer is reasonable

Image: estimation

to see if an answer makes sense

Image: reasonable

a number that is added to another number

Image: addend

the answer to an addition problem

Image: sum

a number written as the sum of the values of its digits

Image: expanded form

break a number down

Image: decompose

commutative property

the order numbers are added or multiplied in doesn't matter

Image: commutative property

minuendthe number that is to be subtracted from.subtrahendthe number being subtracteddifferencethe answer to a subtraction problemtotaladd or multiply to find; subtract or divide when you knowinverse operationopposite operations

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