六年级简便计算题简便计算(70+1/68)*1/69
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六年级简便计算题简便计算(70+1/68)*1/69
六年级简便计算题简便计算(70+1/68)*1/69
六年级简便计算题简便计算(70+1/68)*1/69
(70+1/68)*1/69
=(69+1+1/68)*1/69
=(69+69/68)*1/69
=69*1/69+69/68*1/69
=1+1/68
=69/68
(70+1/68)*1/69
=(69+1+1/68)*1/69
=(69+69/68)*1/69
=69*1/69+69/68*1/69
=1+1/68
=1又1/68
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(70+1/68)*1/69
=(69+1+1/68)*1/69
=(69+69/68)*1/69
=69*1/69+69/68*1/69
=1+1/68
=69/68
﹙69＋69/68﹚×1/69＝69×1/69＋69/68×1/69＝1＋1/68＝69／68或1又1/68
(70+1/68)*1/69
=(69+1+1/68)*1/69
=(69+69/68)*1/69
=69*1/69+69/68*1/69
=1+1/68
=69/68
原式=(70+1/68)*(1/69)
=(70/69)+(1/68*69)=(68*70+1)/68*69
=(68*69+68+1)/68*69
=1+(69/68*69)
=1+(1/68)
=69/68
...
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原式=(70+1/68)*(1/69)
=(70/69)+(1/68*69)=(68*70+1)/68*69
=(68*69+68+1)/68*69
=1+(69/68*69)
=1+(1/68)
=69/68
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