2个回答
1 12*(1-3/4)=3米
（2）12*(1-75%)=3米
1.（1）500*20%=100
500*(1+20%)=600
1.5*140%=2.1
50*(1-60%)=20
40*(1-90%)=4
children’s day is coming. i’m very excited. in the morning i’m going to have a picnic in the park. i get there by bike.。in the afternoon.i am going to play computer games ,inafternoon evening .i am going to the cinema and climb mountain