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2.69*4.56+4.56*6.33+4.56,5.45*24*0.2-3.45*4.8,4.26*52.7+35.2

来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/10 19:41:43
2.69*4.56+4.56*6.33+4.56,5.45*24*0.2-3.45*4.8,4.26*52.7+35.2*5.27+0.222*527,用简便方法计算
2.69*4.56+4.56*6.33+4.56,5.45*24*0.2-3.45*4.8,4.26*52.7+35.2
1.一是用计算机.(哈哈!)
2.一,先放上括号:(2.69*4.56)+(4.56*6.33)+(4.56)+(5.45*24*0.2)-(3.45*4.8)+
( 4.26*52.7)+(35.2*5.27)+(0.222*527)
二,把四点五六的放在一起:4.56*(2.69+6.33+1) +(5.45*24*0.2)-(3.45*4.8)+
( 4.26*52.7)+(35.2*5.27)+(0.222*527)
三,先不着急求出答案,现在注意52.7,5.27和527 :4.56*10.02 +(5.45*24*0.2)-(3.45*4.8)+ ( 4.26*52.7)+(35.2*5.27)+(0.222*527)
四,先把这三个括号去掉:4.56*10.02 +(5.45*24*0.2)- (3.45*4.8)+ 4.26*52.7+ 35.2*5.27+ 0.222*527
五,然后再分配:4.56*10.02 +(5.45*24*0.2)- (3.45*4.8)+ 4.26*5.27+ 35.2*52.7+ 0.222*527
六,最后试着把小数点该去掉:4.56*10.02 +(5.45*24*0.2)- (3.45*4.8)+ 4.26*5.27+ 35.2*52.7+ 0.222*527
七,反正最后答案是582.2912