直接写出得数
0.3+0.47= 10﹣4.7= 0.33+0.3= 20.2﹣10.2= 7.6+0.4=
3.9﹣0.6= 50.23+0.77= 48.51﹣4.09= 2.02+3.8= 8.4﹣4.8=
直接写出得数
0.3+0.47= 10﹣4.7= 0.33+0.3= 20.2﹣10.2= 7.6+0.4=
3.9﹣0.6= 50.23+0.77= 48.51﹣4.09= 2.02+3.8= 8.4﹣4.8=
是乙数的
，甲数是乙数的
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= 4.2÷2.1=
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