1.6×6.2×1.25简便计算要过程 急

2024-11-22 23:46:45
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解1.6×6.2×1.25
=4×0.4×6.2×1.25
=4×1.25×0.4×6.2
=5×0.4×6.2
=2×6.2
=12.4