(25.4+1.6)0.25简便计算
是除以0.25
(25.4+1.6)x0.25简便计算
=27x0.25
=(30-3)x0.25
=30x0.25-3x0.25
=7.5-0.75
=6.75追问
=27x0.25
=(30-3)x0.25
=30x0.25-3x0.25
=7.5-0.75
=6.75追问
是除以0.25
是除以0.25
追答(25.4+1.6)÷0.25简便计算
=27÷0.25
=27x4
=108
27为什么乘四啊?
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第1个回答 2017-10-12
0.25=1/4=/4
原式=(25.4+1.6)/4
=27/4
=6.75追问
原式=(25.4+1.6)/4
=27/4
=6.75追问
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