2.8乘以10.1减0.28用简便计算

2.8乘以10.1减0.28用简便计算
2025-04-04 01:28:28
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回答1:

2.8乘以10.1减0.28用简便计算
2.8乘以10.1减0.28
=2.8*10.1-2.8*0.1
=2.8*(10.1-0.1)
=2.8*10
=28