口算下面各题. 0.6×0.9= 0.45÷0.5= 0.27÷0.03= 4.5×2= 1.25×8= 2.5×4= 7.8÷0.2=

2025-06-21 01:02:35
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回答1:

0.6×0.9=0.54, 0.45÷0.5=0.9, 0.27÷0.03=9, 4.5×2=9, 1.25×8=10,
2.5×4=10, 7.8÷0.2=39, 1÷0.1=10, 10×0.01=0.1, 99×0.1=9.9.