问题
填空题
______÷20=
|
答案
(1)
=117÷260=(117÷13)÷(260÷13)=9÷20;117 260
(2)
=117:260=9:20=(9×4):(20×4)=36:80;117 260
(3)(4)
=117÷260=0.45=45%=4.5折;117 260
所以 9÷20=
=36:80=4.5折=45%;117 260
故答案为:9,80,4.5,45.
______÷20=
|
(1)
=117÷260=(117÷13)÷(260÷13)=9÷20;117 260
(2)
=117:260=9:20=(9×4):(20×4)=36:80;117 260
(3)(4)
=117÷260=0.45=45%=4.5折;117 260
所以 9÷20=
=36:80=4.5折=45%;117 260
故答案为:9,80,4.5,45.