80.7×8.7+8.07×13

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80.7×8.7+8.07×13
80.7×8.7+8.07×13

80.7×8.7+8.07×13
80.7×8.7+8.07×13
=8.07*87+8.07*13
=8.07*100
=807

:80.7×8.7+8.07×13
=8.07×87+8.07×13
=8.07×(87+13)
=8.07×100
=807

80.7×8.7+8.07×13
=80.7×8.7+80.7×1.3
=80.7×(8.7+1.3)
=80.7×10
=807

80.7×8.7+8.07×13=80.7x(8.7+1.3)=80.7x10=807