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小数乘小数的练习课,口算下列各题0.52 180.050.30.5 0.254350.4 0.12501.40.4 12.58,1,0.15,14,0.9,0.56,1,6,10,笔算下列各题：3.74.6 0.290.07 2.610.8,4.81,5.19,6.62,3.69,4.15,33.1,79.44,152.26,24.05,57.72,110.63,25.95,62.28,119.37,20.75,49.8,95.45,18.45,44.28,84.87,4800,4800,48,48,4.8,4.8,
