1.98+2.64+1.02+1.36如何简便计算
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1.98+2.64+1.02+1.36如何简便计算
1.98+2.64+1.02+1.36如何简便计算
1.98+2.64+1.02+1.36如何简便计算
1.98+2.64+1.02+1.36
=(1.98+1.02)+(2.64+1.36)
=3+4
=7
解题思路就是凑整.另学习愉快
1+1
1.98+2.64+1.02+1.36
=1.98+1.02+(2.64+1.36)
=3+4
=7
你的数学是音乐老师教的吗?这么简单的问题也来百度上问。
用加法交换律,把第三项交换到最前边得:原式=1.02+1.98+2.64+1.36=(1.02+1.98)+(2.64+1.36)=3+4=7
(1.98+1.02)+(2.64+1.36)