口算.13×0.4= 1.3×5= 2.14×0.6= 3.48+0.8= 2.8×0.7= 0.125×8= 0.25×4= 1.69×0.06= 6
口算.13×0.4=1.3×5=2.14×0.6=3.48+0.8=2.8×0.7=0.125×8=0.25×4=1.69×0.06=68.7×0=0.72÷9=0.55...
口算.13×0.4= 1.3×5= 2.14×0.6= 3.48+0.8= 2.8×0.7= 0.125×8= 0.25×4= 1.69×0.06= 68.7×0= 0.72÷9= 0.55÷1.1= 0.6×50=
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