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Mathematics 21 Online
OpenStudy (anonymous):

Which number sentence shows the commutative property of addition? 9 + 3 = 12 11 + 7 = 7 +11 3 * 9 =27 3 + ( 9 + 1 ) = ( 3 + 9 ) + 1

OpenStudy (anonymous):

11 + 7 = 7 +11

OpenStudy (anonymous):

medal?

OpenStudy (anonymous):

@wangkan07 Thanks and sure :)

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