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5.2 0.9+0.9简便运算

5.2*0.9+0.9=(5+0.2)x0.9+0.9=5x0.9+0.2x0.9+0.9=4.5+0.18+0.9=4.5+1.08=5.58 谢谢,请采纳

(5.2+1)*0.9=(5.2+1)*(1-0.1)=5.2-0.52+1-0.1=6.2-0.52-0.1=5.58

5.2*0.9+0.9 =(5.2+1)*0.9 =6.2*0.9 =5.58 你好,本题已解答,如果满意 请点右下角“采纳答案”.

5.2*0.9+0.9*4.8解:运用乘法分配律=(5.2+4.8)x0.9=10x0.9=9祝学习进步.

5.2*0.9+0.9*4.8解:运用乘法分配律=(5.2+4.8)x0.9=10x0.9=9祝学习进步.

题目的末尾少打了一个0,导致简算不快了4.7*0.9+5.2*0.9+0.9=4.7+5.2+1*0.9=10.9*0.9=9.81

亲:=0.9*(4.7+5.2+1) =0.9*10 =9 请采纳

5.2 *0.9+0.9=0.9(5.2+1)=6.2(1-0.1)=6.2-0.62=5.58

=0.9*(5.2+0.28)=0.9*5.48=(1-0.1)*5.48=5.48-0.548=4.932

5.2*0.9=5.2*(1-0.1)=5.2*1-5.2*0.1=5.2-0.52=4.68

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