直接写得数：
0.06×0.25= 0.8×1.25= 10﹣0.01= 8.1÷0.03=
3×0.2×0.5= 0.25×16= 0.35÷0.7= 8.4÷0.2+1.6×0.21=
7.2×0.3+2.8×0.3= 1.2×0.4+1.3×0.4=
直接写得数：
0.06×0.25= 0.8×1.25= 10﹣0.01= 8.1÷0.03=
3×0.2×0.5= 0.25×16= 0.35÷0.7= 8.4÷0.2+1.6×0.21=
7.2×0.3+2.8×0.3= 1.2×0.4+1.3×0.4=
小时，谁打的速度快些？
千克．
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