1÷(1/20+1/15)=
8个回答
=1÷7/60
=1X60/7
=8又4/7
相关问题
20÷[1÷(1/10+1/15)]
1/20÷1/15=
1÷( )=5/( )=( )/20=15÷( )=1/2=( )%=( )(填成数)
数学题,5分,帮忙算下5820÷80%+288=?1÷(1-20%)—11×(1-10%)×(1—20%)1×(1-15
1÷1+1÷3+1÷6+1÷10+1÷15+1÷21+…+1÷5050
1÷(1+1/2)÷(1+1/2)÷(1+1/4)÷.÷(1+1/18)÷(1+1/19)÷(1+1/20)
巧算:1÷(1+1/2)÷(1+1/3)÷(1+1/4)÷……÷(1+1/20)=
1 1÷3 1÷6 1÷10 1÷15 通项公式
1.2=()分之十二=6÷()=20分之()=()÷15
【(20+9.744÷2.4)*0.15-1.63】÷0.25