《2025年课课练六年级数学上册苏教版》

1. 计算下面各题。
$2-\frac{8}{15}×\frac{9}{16}$
$1-\frac{8}{9}×\frac{3}{8}×\frac{1}{7}$
$[1-(\frac{3}{4}-\frac{3}{8})]÷\frac{5}{6}$
$5-(\frac{6}{7}÷\frac{3}{14}+\frac{6}{13})$
$6÷(\frac{3}{5}+\frac{3}{4})$
$1-\frac{6}{7}÷\frac{3}{7}×\frac{3}{16}$

答案： $​ =2-\frac 3{10}​$
$​ =1\frac 7{10}​$
$​ =1-\frac 13×\frac 17​$
$​ =1-\frac 1{21}​$
$​ =\frac {20}{21}​$
$​ =[1-\frac 38]×\frac 65​$
$​ =\frac 58×\frac 65​$
$​ =\frac 34​$
$​ =5-(\frac 67×\frac {14}3+\frac 6{13})​$
$​ =5-4-\frac 6{13}​$
$​ =\frac 7{13}​$
$​ =6÷(\frac {12}{20}+\frac {15}{20})​$
$​ =6÷\frac {27}{20}​$
$​ =6×\frac {20}{27}​$
$​ =\frac {40}9​$
$​ =1-\frac 67×\frac 73×\frac 3{16}​$
$​ =1-2×\frac 3{16}​$
$​ =1-\frac 38​$
$​ =\frac 58​$

2. 用简便方法计算。
$\frac{6}{5}×\frac{2}{15}+\frac{2}{15}×\frac{4}{5}$
$\frac{6}{11}÷4-\frac{1}{4}×\frac{5}{11}$
$\frac{7}{9}×\frac{7}{11}+\frac{7}{9}×\frac{4}{11}$
$\frac{32}{33}×32$

答案： $​ =(\frac 65+\frac 45)×\frac 2{15}​$
$​ =2×\frac 2{15}​$
$​ =\frac 4{15}​$
$​ =\frac 6{11}×\frac 14-\frac 14×\frac 5{11}​$
$​ =\frac 14×(\frac 6{11}-\frac 5{11})​$
$​ =\frac 14×\frac 1{11}​$
$​ =\frac 1{44}​$
$​ =(\frac 7{11}+\frac 4{11})×\frac 79​$
$​ =1×\frac 79​$
$​ =\frac 79​$
$​ =\frac {32}{33}×(33-1)​$
$​ =\frac {32}{33}×33-\frac {32}{33}​$
$​ =32-\frac {32}{33}​$
$​ =31\frac 1{33}​$