Question

11．直接寫出得數(shù)．
9÷$\frac{1}{9}$=
$105×（\frac{1}{5}+\frac{1}{7}）$=
0.375-$\frac{1}{8}$=
10%×10%+0.9=

Answer 1

分析 根據(jù)分?jǐn)?shù)四則計(jì)算的計(jì)算法則，以及四則混合運(yùn)算的運(yùn)算順序進(jìn)行計(jì)算即可．其中$105×（\frac{1}{5}+\frac{1}{7}）$根據(jù)乘法分配律簡(jiǎn)算．

解答 解：9÷$\frac{1}{9}$=81
$105×（\frac{1}{5}+\frac{1}{7}）$=36
0.375-$\frac{1}{8}$=$\frac{1}{4}$
10%×10%+0.9=0.91

點(diǎn)評(píng) 考查了分?jǐn)?shù)的四則運(yùn)算，關(guān)鍵是熟練掌握計(jì)算法則正確進(jìn)行計(jì)算．注意能簡(jiǎn)算的要簡(jiǎn)算．