《2025年暑假衔接延边人民出版社六年级数学人教版》

1. 直接写出得数。
$\frac {4}{9}×\frac {3}{8}=$$\frac{1}{6}$ $\frac {5}{6}÷15=$$\frac{1}{18}$ $2.4×\frac {5}{6}=$2 $1-\frac {3}{11}-\frac {7}{11}=$$\frac{1}{11}$
$\frac {4}{7}÷2=$$\frac{2}{7}$ $\frac {3}{8}÷\frac {3}{5}=$$\frac{5}{8}$ $3.6÷1.2=$3 $\frac {1}{2}+1÷3=$$\frac{5}{6}$
$\frac {3}{4}×0.8=$0.6 $\frac {3}{4}×\frac {8}{15}=$$\frac{2}{5}$ $3.2+1.18=$4.38 $\frac {15}{11}-(\frac {4}{11}+\frac {2}{13})=$$\frac{11}{13}$

答案： $\frac{1}{6}$ $\frac{1}{18}$ 2 $\frac{1}{11}$ $\frac{2}{7}$ $\frac{5}{8}$ 3 $\frac{5}{6}$ 0.6 $\frac{2}{5}$ 4.38 $\frac{11}{13}$

2. 竖式计算,带*号的要验算。
$0.16÷2.3≈$0.07(得数保留两位小数) *$4.8÷0.75=$6.4 $768×22=$16896
(验算略)

答案： (验算略) $0.16÷2.3≈0.07$ $4.8÷0.75=6.4$ $768×22=16896$

3. 脱式计算。
(1)$\frac {5}{12}÷[\frac {1}{2}×(\frac {2}{3}-\frac {1}{4})]$ (2)$\frac {2}{5}+\frac {3}{5}×(2-\frac {1}{2})$
(3)$\frac {1}{13}+\frac {12}{13}×(\frac {1}{2}-\frac {1}{3})$ (4)$\frac {3}{22}×[\frac {11}{12}÷(\frac {5}{6}-\frac {3}{4})]$

答案：
(1)2
(2)$\frac{13}{10}$
(3)$\frac{3}{13}$
(4)$\frac{3}{2}$