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4.7x8列竖式计算

=0.125×8×4.7 =1×4.7 =4.7

4.8×4.7+13×0.48 =4.8×4.7+1.3×10×0.48 =4.8×(4.7+1.3) =4.8×6 =28.8 1.12×8.2+2.8×1.12-1.12 =1.12×8.2+2.8×1.12-1.12×1 =1.12×(8.2+2.8-1) =1.12×(11-1) =1.12×10 =11.2

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