问题 解答题
口算.
1.2×5=
0.8×7=0.4×0.5=4.8×0.2=
0.3×60=6.09×0=8.8×0.1=5.28+1.6=
答案

1.2×5=6,0.8×7=5.6,0.4×0.5=0.2,4.8×0.2=0.96,
0.3×60=18,6.09×0=0,8.8×0.1=0.88,5.28+1.6=6.88,

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