2.25×0.26+264×0.0225+5.2×2.25+0.225+0.225×20=______．
问题描述：
2.25×0.26+264×0.0225+5.2×2.25+0.225+0.225×20=______．
答
2.25×0.16+264×0.0225+5.2×2.25+0.225×20
=2.25×0.16+2.64×2.25+5.2×2.25+2.25×2
=2.25×（0.16+2.64+5.2+2）
=2.25×10
=22.5
故答案为：22.5．
答案解析：通过观察，此题应通过数字转化，运用乘法分配律简算．
考试点：小数的巧算．
知识点：认真分析数据，通过数字转化，进行简便计算．