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(1)2.1×2.6+7.4×5.4+2.6×3.3  
(2)0.147×368+0.632×l47.
分析:(1)可连续运用乘法分配律计算.
(2)可将0.147×368变为147×0.368后根据乘法分配律计算.
解答:解:(1)2.1×2.6+7.4×5.4+2.6×3.3 
=(2.1+3.3)×2.6+7.4×5.4,
=5.4×2.6+7.4×5.4,
=(2.6+7.4)×5.4,
=10×5.4,
=54.

(2)0.147×368+0.632×l47
=147×0.368+0.632×147,
=(0.368+0.632)×147,
=1×147,
=147.
点评:完成本题要细心分析题目中数据的特点,然后运用合适的方法计算.
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