4.78×1.5-0.6÷0.4简便方法,
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4.78×1.5-0.6÷0.4简便方法,
要简便方法啊!
要简便方法啊!
![4.78×1.5-0.6÷0.4简便方法,](/uploads/image/z/17792620-52-0.jpg?t=4.78%C3%971.5-0.6%C3%B70.4%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%2C)
4.78×1.5-0.6÷0.4
=4.78×5/2-0.6×5/2
=5/2(4.78-0.6)
=5/2×4.18
=20.9/2
=10.45
=4.78×5/2-0.6×5/2
=5/2(4.78-0.6)
=5/2×4.18
=20.9/2
=10.45