登录
一、脱式计算。
$\frac{9}{16}÷(\frac{1}{2}+\frac{1}{8})$
$\frac{2}{5}÷\frac{7}{9}÷\frac{14}{15}$
$\frac{2}{13}×[\frac{11}{24}÷(\frac{1}{3}-\frac{1}{4})]$
$\frac{9}{16}÷(\frac{1}{2}+\frac{1}{8})$
$\frac{2}{5}÷\frac{7}{9}÷\frac{14}{15}$
$\frac{2}{13}×[\frac{11}{24}÷(\frac{1}{3}-\frac{1}{4})]$
答案
1.$\frac{9}{10}$
2.$\frac{27}{49}$
3.$\frac{11}{13}$
2.$\frac{27}{49}$
3.$\frac{11}{13}$
二、简便计算。
$\frac{9}{16}×\frac{1}{4}+\frac{7}{16}÷4$
$1.3÷\frac{5}{6}+3.7×\frac{6}{5}$
$(\frac{28}{15}+\frac{28}{9}+\frac{28}{5})÷\frac{28}{45}$
$\frac{5}{11}×\frac{4}{67}+\frac{7}{67}÷\frac{11}{5}$
$[\frac{3}{4}-(\frac{1}{4}+\frac{3}{8})]÷\frac{7}{16}$
$\frac{6}{7}÷\frac{5}{26}×\frac{5}{13}$
$0.25×[(\frac{4}{5}-\frac{2}{15})÷\frac{3}{20}]$
$\frac{9}{8}÷[(0.3+\frac{1}{5})×\frac{1}{20}]$
$(\frac{5}{6}+\frac{3}{4})÷\frac{5}{12}+\frac{4}{5}$
$\frac{9}{16}×\frac{1}{4}+\frac{7}{16}÷4$
$1.3÷\frac{5}{6}+3.7×\frac{6}{5}$
$(\frac{28}{15}+\frac{28}{9}+\frac{28}{5})÷\frac{28}{45}$
$\frac{5}{11}×\frac{4}{67}+\frac{7}{67}÷\frac{11}{5}$
$[\frac{3}{4}-(\frac{1}{4}+\frac{3}{8})]÷\frac{7}{16}$
$\frac{6}{7}÷\frac{5}{26}×\frac{5}{13}$
$0.25×[(\frac{4}{5}-\frac{2}{15})÷\frac{3}{20}]$
$\frac{9}{8}÷[(0.3+\frac{1}{5})×\frac{1}{20}]$
$(\frac{5}{6}+\frac{3}{4})÷\frac{5}{12}+\frac{4}{5}$
答案
1.$\frac{1}{4}$
2.$6$
3.$17$
4.$\frac{5}{67}$
5.$\frac{2}{7}$
6.$\frac{12}{7}$
7.$\frac{10}{9}$
8.$45$
9.$4\frac{3}{5}$
2.$6$
3.$17$
4.$\frac{5}{67}$
5.$\frac{2}{7}$
6.$\frac{12}{7}$
7.$\frac{10}{9}$
8.$45$
9.$4\frac{3}{5}$
三、巧算。
$2026÷ 2026\dfrac{2026}{2027}$
$\dfrac{498× 381 + 382}{382× 498 - 116}$
$2026÷ 2026\dfrac{2026}{2027}$
$\dfrac{498× 381 + 382}{382× 498 - 116}$
答案
1.$\frac{2027}{2028}$
2.$1$
2.$1$
