45×0.2= 10﹣0.89= 2.8×= 8÷=
0.8×125%= ÷= += 1﹣1÷9=
0.32= 32×196≈
÷[(1+)×]
17×19×()
0.25×12.5×32
= ﹣0.25= 0÷5=
= 5.4×= 80×0.7=
101×25= ×0.5= ×= 5+= 2.5× =
3.2÷8= 1.25- = 5× ÷5÷ = 1.25× ×0.8=
1.5÷0.05= 8÷0.001= 2.2+8= 31.9-3.09= 3×4÷3×4=
× = 5- + = × = 0.12= 1÷ - ÷1=
45× =
÷10=
× =
0÷ =
0.75× =
102﹣92=
25×40%=
7.9+5.12=
2.5×36×4=
方案一:每个展厅准备2000份宣传材料;
方案二:D展厅准备2400份,A展厅1800份,其余2个展厅各900份;
方案三:D展厅1500份,A展厅900份,其余2个展厅各1800份。