如题所述
78x[(540+280)÷4]怎么简便计算?
78x[(540+280)÷4]=78x(540÷4+280÷4)=78x(135+70)=78x205=78x(200+5)=78x200+78x5=15600+390=15990
78x[(540+280)÷4]=78x(540÷4+280÷4)=78x(135+70)=78x205=78x(200+5)=78x200+78x5=15600+390=15990
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第1个回答 2021-04-27
78×【(540+280)÷4】这样简便计算:
78×【(540+280)÷4】
=78×(820÷4)
=78×205
=78×(200+5)
=15600+390
=15990本回答被网友采纳
78×【(540+280)÷4】
=78×(820÷4)
=78×205
=78×(200+5)
=15600+390
=15990本回答被网友采纳
第2个回答 2021-04-27
78×【(540+280)÷4】
=78x(540/4 +280/4)
=78x(135+70)
=78x205
=78x(200+5)
=15600+390
=15990本回答被网友采纳
=78x(540/4 +280/4)
=78x(135+70)
=78x205
=78x(200+5)
=15600+390
=15990本回答被网友采纳
第3个回答 2023-03-18
300x[(87+145) ÷4]简便运算
第4个回答 2021-04-27
=78*820/4
=78*205
=78*(200+5)
=78*200+78*5
=15600+390
=15990
=78*205
=78*(200+5)
=78*200+78*5
=15600+390
=15990