6.13ⅹ98+6.13+6.13
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6.13×98+6.13+6.13
=6.13×98+6.13×1+6.13×1
=(98+1+1)×6.13
=100×6.13
=613
=6.13×98+6.13×1+6.13×1
=(98+1+1)×6.13
=100×6.13
=613
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