，10月用电多少度？算式是（ ）| A．50× | B．50÷ | C．50+ |
 ×0= |  × = |  ×12= |  × = |
 × = |  ÷ = | 9× = |  ÷ = |
18× = |  ÷ = |  ÷ = |  × = |
× =
÷ =1
× =0.2× =1． 
÷
÷24 
×
×
×
．  ×15= | 35× = |  × = | ×7+×11= |
12÷ = | ÷ = |  × ÷ = | 2.4× = |
 × ÷×= | 0× + = | | |
后的售价是36元，原价是（ ）元．| A．40 | B．27 | C．45 | D．48 |
，完成任务他需要 ． 
正好截去25米，这根铁丝原长是 米． 
是 米． 
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