45.2✖️62.5+38.8✖️6.25简算？
1个回答
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=452×6.25+38.8×6.25
=6.25（452+38.8）
=6.25×490.8
=25/4×490.8
=25×490.8/4
=25×122.7
=（30-5）122.7
=122.7×30-122.7×5
=1227×3-122.7×5
=3681-613.5
=3067.5
=6.25（452+38.8）
=6.25×490.8
=25/4×490.8
=25×490.8/4
=25×122.7
=（30-5）122.7
=122.7×30-122.7×5
=1227×3-122.7×5
=3681-613.5
=3067.5
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