17×0.25+1/4+2×25% 怎么简便计算?

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17×0.25+1/4+2×25% 怎么简便计算?
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17×0.25+1/4+2×25% 怎么简便计算?
17×0.25+1/4+2×25% 怎么简便计算?

17×0.25+1/4+2×25% 怎么简便计算?
17×0.25+1/4+2×25%
=17×0.25+0.25+2×0.25
=0.25×(17+1+2)
=0.25×20
=5