8.7×25+1.3×2.5怎样简便运算
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8.7×25+1.3×2.5怎样简便运算
8.7×25+1.3×2.5
怎样简便运算
8.7×25+1.3×2.5怎样简便运算
=(8.7+0.13)× 25
=8.83×25
=220.75
8.7×25+1.3×2.5
=217.5+3.25
=220.75
(87+1.3)*2.5
8.7×25+1.3×2.5怎样简便运算
8.7×25+1.3×2.5
怎样简便运算
8.7×25+1.3×2.5怎样简便运算
=(8.7+0.13)× 25
=8.83×25
=220.75
8.7×25+1.3×2.5
=217.5+3.25
=220.75
(87+1.3)*2.5