7.1÷(0.2+0.05)×3.51列脱式计算。
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发布时间:2024-10-06 06:29
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时间:2024-12-14 18:47
①6.4÷(0.3×2+0.2),
=6.4÷0.8,
=8;
②68.1-77.7÷0.7×0.5,
=68.1-55.5,
=12.6;
③3.5×5.2+0.35×48,
=0.35×52+0.35×48,
=0.35×(52+48),
=35;
④3.08÷[1.6×(3.8-2.05)],
=3.08÷[1.6×(3.8-2.05)],
=3.08÷2.8,
=1.1.