题目内容
心算. 0.6×0.7= |
0.9×0.05= | 0.12×0.6= |
1.2×0.3= | 0.03×0.6= | 0.16×0.5= |
0.7×0.8= | 23×0.3= | 0.15×0.4= |
0.6×0.7=0.42; | 0.9×0.05=0.045; | 0.12×0.6=0.072; |
1.2×0.3=0.36; | 0.03×0.6=0.018; | 0.16×0.5=0.08; |
0.7×0.8=0.56; | 23×0.3=6.9; | 0.15×0.4=0.06. |
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