直接写得数．
56+2.4= 1﹣0.48= 0.81÷3=
0.5×2.4= 4×0.24+0.24= 5﹣5=
3.2÷0.4= 0.05×20= 8.2÷0.01=
6.8﹣1.3﹣2.7= ．
直接写得数．
56+2.4= 1﹣0.48= 0.81÷3=
0.5×2.4= 4×0.24+0.24= 5﹣5=
3.2÷0.4= 0.05×20= 8.2÷0.01=
6.8﹣1.3﹣2.7= ．
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