(20+9.744÷2.4)×0.4必须简便计算,

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(20+9.744÷2.4)×0.4必须简便计算,
(20+9.744÷2.4)×0.4
必须简便计算,

(20+9.744÷2.4)×0.4必须简便计算,
(20+9.744÷2.4)×0.4
=20*0.4+9.744*0.4/2.4
=8+9.744/6
=8+1.624
=9.624

(20+9.744÷2.4)×0.4
=20*0.4+9.744÷2.4×0.4
=8+9.744÷(2.4÷0.4)
=8+9.744÷6
=8+1.624
=9.624
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等于9.624
先9.744÷2.4=4.06,4.06+20=24.06,24.06÷0.4=9.624.