6.28x1.35+3.14x3.72+1.79x6.28简便计算的方法？
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6.28×1.35+3.14×3.72+1.79×6.28
=6.28×1.35+3.14×（2×1.86）+1.79×6.28
=6.28×1.35+（3.14×2）×1.86+1.79×6.28
=6.28×1.35+6.28×1.86+1.79×6.28
=6.28×（1.35+1.86+1.79）
=6.28×5
=31.4
=6.28×1.35+3.14×（2×1.86）+1.79×6.28
=6.28×1.35+（3.14×2）×1.86+1.79×6.28
=6.28×1.35+6.28×1.86+1.79×6.28
=6.28×（1.35+1.86+1.79）
=6.28×5
=31.4
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