相关试题
如图，计算阴影部分面积下列列式正确的个数有 ( )
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(1)(1.5m+2.5m)(m+2m+2m+2m+m)－2×2.5m×2m
(2)1.5m×(m+2m+2m+2m+m)+2×2.5m×m+2.5m×2m
(3)2×(1.5m+2.5m)×m+2×1.5m×2m+(1.5m+2.5m)×2m
(4) (1.5m+2.5m)×2m +2[(1.5m+2.5m)(m+2m)－2.5m×2m]
A．1个 B．2个 C．3个 D．4个
(2) 
(3)
(4) 
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