0.28*0.45+1.85的简便算法
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0.28*0.45+1.85的简便算法
0.28*0.45+1.85的简便算法
0.28*0.45+1.85的简便算法
0.28*0.45+1.85 =0.28*(0.5-0.05)+2-0.15 =1.4-0.14+2-0.15 =3.4-0.29 =3.11
0.28*0.45+1.85的简便算法
0.28*0.45+1.85的简便算法
0.28*0.45+1.85的简便算法
0.28*0.45+1.85 =0.28*(0.5-0.05)+2-0.15 =1.4-0.14+2-0.15 =3.4-0.29 =3.11