6.28×1.5×6.28简便计算？
2个回答
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6.28×1.5×6.28简便计算是：
=6.28×3/2×6.28
=3.14×3×6.28
=9.42×6.28
=(10-0.58)×6.28
=10×6.28-0.58×6.28
=62.8-(0.6-0.02)×6.28
=62.8-(0.6×6.28-0.02×6.28)
=62.8-(3.768-0.1256)
=62.8+0.1256-3.768
=62.9256-3.768
=59.1576
=6.28×3/2×6.28
=3.14×3×6.28
=9.42×6.28
=(10-0.58)×6.28
=10×6.28-0.58×6.28
=62.8-(0.6-0.02)×6.28
=62.8-(0.6×6.28-0.02×6.28)
=62.8-(3.768-0.1256)
=62.8+0.1256-3.768
=62.9256-3.768
=59.1576
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