4.25÷2.5×9.9+0.17简算

4.25÷2.5×9.9+0.17简算
4.25÷2.5×9.9+0.17简算

4.25÷2.5×9.9+0.17简算
4.25÷2.5×9.9+0.17
=1.7×9.9+0.17 我们从这里开始简便计算
=0.17×99+0.17
=0.17×99+0.17×1
=0.17×（99+1）
=0.17×100
17
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无法简算，得按顺序计算。

4.25/(10/4)*(10-0.1)+0.17
=(4+0.25)/10*4*(10-0.1)+0.17
=(0.4+0.025)*4(10-0.1)+0.17
=(1.6+0.1)(10-0.1)+0.17
=16-0.16+1-0.01+0.17
=17