，自然成绩是多少分？相关试题
口算下面各题．
0.5×1.2= 1.25×0.8= 0.16×0.5=
0.25×4= 3.2×0.5= 0.2×50=
1.1×0.1= 1.7×0.03= 2.4×0.5=
0.12×7=
口算下面各题．
0.5×1.2= 1.25×0.8= 0.16×0.5=
0.25×4= 3.2×0.5= 0.2×50=
1.1×0.1= 1.7×0.03= 2.4×0.5=
0.12×7=
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