口算(3)
同学们,这里有40道题目,每做对1道题可夺得一面旗帜,比一比5分钟的时间里,谁夺得的旗帜最多。
$\frac{3}{5} × \frac{5}{6} =$
$\frac{5}{7} × \frac{7}{8} =$
$16 × \frac{7}{16} =$
$\frac{8}{13} × \frac{13}{16} =$
$\frac{7}{22} ÷ \frac{7}{11} =$
$\frac{1}{25} × \frac{25}{26} =$
$\frac{15}{16} - \frac{13}{16} =$
$\frac{1}{4} + \frac{1}{2} =$
$\frac{13}{40} ÷ \frac{13}{40} =$
$\frac{10}{11} + \frac{1}{11} - \frac{2}{11} =$
$\frac{3}{8} ÷ \frac{1}{4} =$
$\frac{8}{9} × 3 =$
$\frac{3}{4} × \frac{1}{3} =$
$0 × \frac{4}{17} =$
$\frac{3}{5} × \frac{5}{7} =$
$\frac{3}{8} × 16 =$
$1 - \frac{7}{15} =$
$\frac{5}{7} × \frac{4}{5} =$
$\frac{1}{5} + \frac{3}{10} =$
$\frac{5}{6} ÷ \frac{1}{3} × 2 =$
$0 + \frac{3}{4} =$
$33 × \frac{1}{3} =$
$24 ÷ \frac{6}{7} =$
$\frac{6}{7} + \frac{1}{7} =$
$\frac{14}{25} × \frac{25}{28} =$
$\frac{5}{12} + \frac{1}{3} =$
$\frac{8}{9} × \frac{3}{8} =$
$3 ÷ \frac{1}{10} =$
$\frac{5}{60} - \frac{1}{30} =$
$\frac{4}{7} × \frac{3}{4} × \frac{7}{9} =$
$\frac{1}{12} × \frac{12}{19} =$
$\frac{5}{28} × 14 =$
$\frac{5}{6} - \frac{2}{3} =$
$\frac{5}{9} × 18 =$
$\frac{1}{13} ÷ 2 =$
$\frac{7}{8} × \frac{3}{7} =$
$\frac{1}{6} × \frac{3}{4} =$
$24 × \frac{5}{12} =$
$39 × \frac{1}{13} =$
$\frac{1}{5} × \frac{1}{2} ÷ \frac{1}{10} =$
结果统计:我夺了()面旗帜。

$\frac{3}{5} × \frac{5}{6} = \frac{1}{2}$
$\frac{3}{8} ÷ \frac{1}{4} = \frac{3}{2}$
$0+ \frac{3}{4} = \frac{3}{4}$
$\frac{1}{12} × \frac{12}{19} = \frac{1}{19}$
$\frac{5}{7} × \frac{7}{8} = \frac{5}{8}$
$\frac{8}{9} × 3 = \frac{8}{3}$
$33 × \frac{1}{3} = 11$
$\frac{5}{28} × 14 = \frac{5}{2}$
$16 × \frac{7}{16} = 7$
$\frac{3}{4} × \frac{1}{3} = \frac{1}{4}$
$24 ÷ \frac{6}{7} = 28$
$\frac{5}{6} - \frac{2}{3} = \frac{1}{6}$
$\frac{8}{13} × \frac{13}{16} = \frac{1}{2}$
$0 × \frac{4}{17} = 0$
$\frac{6}{7} + \frac{1}{7} = 1$
$\frac{5}{9} × 18 = 10$
$\frac{7}{22} ÷ \frac{7}{11} = \frac{1}{2}$
$\frac{3}{5} × \frac{5}{7} = \frac{3}{7}$
$\frac{14}{25} × \frac{25}{28} = \frac{1}{2}$
$\frac{1}{13} ÷ 2 = \frac{1}{26}$
$\frac{1}{25} × \frac{25}{26} = \frac{1}{26}$
$\frac{3}{8} × 16 = 6$
$\frac{5}{12} + \frac{1}{3} = \frac{3}{4}$
$\frac{7}{8} × \frac{3}{7} = \frac{3}{8}$
$\frac{15}{16} - \frac{13}{16} = \frac{1}{8}$
$1 - \frac{7}{15} = \frac{8}{15}$
$\frac{8}{9} × \frac{3}{8} = \frac{1}{3}$
$\frac{1}{6} × \frac{3}{4} = \frac{1}{8}$
$\frac{1}{4} + \frac{1}{2} = \frac{3}{4}$
$\frac{5}{7} × \frac{4}{5} = \frac{4}{7}$
$3 ÷ \frac{1}{10} = 30$
$24 × \frac{5}{12} = 10$
$\frac{13}{40} ÷ \frac{13}{40} = 1$
$\frac{1}{5} + \frac{3}{10} = \frac{1}{2}$
$\frac{5}{60} - \frac{1}{30} = \frac{1}{20}$
$39 × \frac{1}{13} = 3$
$\frac{10}{11} + \frac{1}{11} - \frac{2}{11} = \frac{9}{11}$
$\frac{5}{6} ÷ \frac{1}{3} × 2 = 5$
$\frac{4}{7} × \frac{3}{4} × \frac{7}{9} = \frac{1}{3}$
$\frac{1}{5} × \frac{1}{2} ÷ \frac{1}{10} = 1$
结果统计:我夺了(40)面旗帜。