(1+1/2-1/3-1/4)*12= 18-6÷ (-2)*|-1/4|= -1^100-(1-0.5)÷3*[3-(
1、用竖式计算.(1)0.384÷0.24= (2)18.2÷0.65=(3)24÷0.5= (4)4.56÷12=(1
1÷(1×2)+1÷(2×3)+1÷(3×4)+…1÷(99×100)=( )
12÷(3/4÷1/5) = =
12/5×8/3=()÷24/13=()×3/1=()÷26/1=() 2/1×3/1=()÷2/1=()÷9/4=()
1/2÷(-4/7)=-2 4÷(-24)=-1/6 -18÷(-3)=-6 6÷(-1/3)=-9 这四个里面有几个对
(1)9/2÷27=6/2÷18=3/2÷9=1/2÷()=()÷()=
-13又1/2×(1又1/4-2又11/12)÷ (-0.5)÷3/4×4/3-4/3×[(-2)^2-2^2]
1、0.2008+2.008+20.08+200.8+2008= 2、1÷(2÷3)÷(3÷4)
简算1÷(1×2×3)+1÷(2×3×4)+1÷(3×4×5)+1÷(4×5×6)+.+1÷(98×99×100)
x-3/2-2x+1=1 (-3)^2—2^3÷1/3*3 -1^4=50÷2^2*(-1/2) 72°35′÷2+18
1/4÷(2/3-1/6)
简算:(1+1/3+1/5+1/10+1/15+1/30)÷(1/2+1/4+1/6+1/12+1/20+1/60)=?