(0.75+0.2)/0.25*2.5 简算!式子

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(0.75+0.2)/0.25*2.5 简算!式子
(0.75+0.2)/0.25*2.5 简算!式子

(0.75+0.2)/0.25*2.5 简算!式子
(0.75+0.2)/0.25*2.5
=(3/4+1/5)×4×5/2
=3/4×4×5/2+1/5×4×5/2
=15/2+2
=7.5+2
=9.5
或:
(0.75+0.2)/0.25*2.5
=0.95×4×2.5
=0.95×(4×2.5)
=0.95×10
=9.5

(0.75+0.2)/0.25*2.5
=0.95/0.25*2.5
=0.95*10
=9.5

(0.75/0.25+0.2/0.25)*1/2.5=(3+0.8)*0.4=1.52