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23.4%0.8.4%7.2=多少,简便计算.急 急急急

=23.4-13.4-(7.2+0.8)=10-8=2

=(23.4-13.4)-(0.8+7.2) =10-8 =2

=(23.4-13.4)-(0,.8+7.2) =10-8 =2

这个...这是我邮箱xinyi_jian@163.com,把题目发过来先。 唉,其实写作业要靠自己呀,孩子...

14-7.32-2.68 =14-(7.32+2.68) =14-10 =4 0.8×(4.3×1.25) =0.8×1.25×4.3 =1×4.3 =4.3 1.23+3.4-0.23+6.6 =1.23-0.23+(3.4+6.6) =1+10 =11 28.6×101-28.6 =28.6×(101-1) =28.6×100 =2860 6.032+3.6+1.98 =9.632+1.98 =9.632+2-0.02 =11.632-0.2...

23.4-0.8-13.4-7.2 解:原式=(23.4-13.4)-(0.8+7.2) =10-8 =2 即23.4-0.8-13.4-7.2=2

4.23×1.28+0.423×9.2 =4.23×1.28+4.23×0.92 =4.23×(1.28+0.92) =4.23×1.2 =4.23×1+4.23×0.2 =4.23+0.846 =5.076 9.8×3.6+0.1×7.2 =9.8×3.6+0.2×3.6 =3.6×(9.8+0.2) =3.6×10 =36

请采纳

1.6加23.4除以7.2 1.6+23.4÷9÷0.8 =1.6+2.6÷0.8 =1.6+13÷4 =1.6+3.25 =4.85 2.07除以0.23在除以0.45 =2.07÷0.9÷0.5÷0.23 =2.3÷0.23÷0.5 =10÷0.5 =20

23.04-0.8-13.4-6.2 =23,04一(0.8+13.4十6.2 ) =23.04一20.4 =2.96

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