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102 0.45的简便运算怎么做

您好:102x0.45=100x0.45+2x0.45=45+0.9=45.9 如果本题有什么不明白可以追问,如果满意记得采纳 如果有其他问题请另发或点击向我求助,答题不易,请谅解,谢谢.祝学习进步!

102x45 =(100+2)x45 =4500+90 =4590

102*45 =[100+2]*45 =100*45+2+45 =4500+90 =4590

分开算,100*0.45+2*0.45

有两种简便算法: 102x0.45 =100x0.45+2x0.45 =45+0.9 =45.9 102x0.45 =102x5-102x0.5 =51-5.1 =45.9

=100x4.5+2x4.5=450+9=459

102*4+102/2

45乘102 =45乘(100+2) =(45乘100)+(45乘2) =4500+90 =4590

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