Question

11．簡(jiǎn)算題
16.4+3.5+83.6+166.5；                   4$\frac{4}{5}$×38.7+4.8+4$\frac{4}{5}$×0.3．

Answer 1

分析 ①根據(jù)加法交換律及結(jié)合律計(jì)算；
②根據(jù)乘法分配律進(jìn)行計(jì)算．

解答 解：①16.4+3.5+83.6+166.5
=（16.4+83.6）+（3.5+166.5）
=100+170
=270

②4$\frac{4}{5}$×38.7+4.8+4$\frac{4}{5}$×0.3
=4.8×38.7+4.8+4.8×0.3
=4.8×（38.7+1+0.3）
=4.8×40
=192

點(diǎn)評(píng) 完成本題要注意分析式中數(shù)據(jù)，運(yùn)用合適的簡(jiǎn)便方法計(jì)算．