1. 直接写出得数。
$\frac{5}{12} × 4 =$
$\frac{3}{8} ÷ \frac{1}{2} =$
$42 ÷ \frac{6}{7} =$
$\frac{5}{14} ÷ \frac{5}{7} =$
$\frac{6}{17} ÷ 3 =$
$\frac{3}{5} × \frac{3}{8} =$
$\frac{2}{9} ÷ 6 =$
$\frac{10}{3} × 30\% =$
$26 ÷ \frac{13}{14} =$
$8 + 2.36 =$
$78 ÷ 100 =$
$\frac{8}{15} × \frac{3}{4} =$
$0.3 × \frac{5}{6} =$
$25 ÷ 10 =$
$\frac{1}{2} - \frac{1}{4} =$
$910 ÷ 70 =$
$\frac{5}{12} × 4 =$
$\frac{3}{8} ÷ \frac{1}{2} =$
$42 ÷ \frac{6}{7} =$
$\frac{5}{14} ÷ \frac{5}{7} =$
$\frac{6}{17} ÷ 3 =$
$\frac{3}{5} × \frac{3}{8} =$
$\frac{2}{9} ÷ 6 =$
$\frac{10}{3} × 30\% =$
$26 ÷ \frac{13}{14} =$
$8 + 2.36 =$
$78 ÷ 100 =$
$\frac{8}{15} × \frac{3}{4} =$
$0.3 × \frac{5}{6} =$
$25 ÷ 10 =$
$\frac{1}{2} - \frac{1}{4} =$
$910 ÷ 70 =$
答案
$\frac{5}{12} × 4 = \frac{5}{3}$
$\frac{3}{8} ÷ \frac{1}{2} = \frac{3}{4}$
$42 ÷ \frac{6}{7} = 49$
$\frac{5}{14} ÷ \frac{5}{7} = \frac{1}{2}$
$\frac{6}{17} ÷ 3 = \frac{2}{17}$
$\frac{3}{5} × \frac{3}{8} = \frac{9}{40}$
$\frac{2}{9} ÷ 6 = \frac{1}{27}$
$\frac{10}{3} × 30\% = 1$
$26 ÷ \frac{13}{14} = 28$
$8 + 2.36 = 10.36$
$78 ÷ 100 = 0.78$
$\frac{8}{15} × \frac{3}{4} = \frac{2}{5}$
$0.3 × \frac{5}{6} = \frac{1}{4}$
$25 ÷ 10 = 2.5$
$\frac{1}{2} - \frac{1}{4} = \frac{1}{4}$
$910 ÷ 70 = 13$
$\frac{3}{8} ÷ \frac{1}{2} = \frac{3}{4}$
$42 ÷ \frac{6}{7} = 49$
$\frac{5}{14} ÷ \frac{5}{7} = \frac{1}{2}$
$\frac{6}{17} ÷ 3 = \frac{2}{17}$
$\frac{3}{5} × \frac{3}{8} = \frac{9}{40}$
$\frac{2}{9} ÷ 6 = \frac{1}{27}$
$\frac{10}{3} × 30\% = 1$
$26 ÷ \frac{13}{14} = 28$
$8 + 2.36 = 10.36$
$78 ÷ 100 = 0.78$
$\frac{8}{15} × \frac{3}{4} = \frac{2}{5}$
$0.3 × \frac{5}{6} = \frac{1}{4}$
$25 ÷ 10 = 2.5$
$\frac{1}{2} - \frac{1}{4} = \frac{1}{4}$
$910 ÷ 70 = 13$
2.在○里填上“>”“<”或“=”。
$\frac{4}{5} ÷ 3$ ○ $\frac{4}{5}$
$30 ÷ \frac{9}{10}$ ○ $30$
$7.8 ÷ 0.1$ ○ $7.8 × 10$
$4.5 × 0.6$ ○ $4.5$
$\frac{5}{6} × 4$ ○ $\frac{5}{6}$
$4.5 × \frac{5}{9}$ ○ $4 × \frac{5}{9}$
$\frac{1}{2} × 0$ ○ $0 ÷ \frac{1}{5}$
$2 ÷ 3$ ○ $2 × 3$
$\frac{4}{5} ÷ \frac{4}{3}$ ○ $\frac{3}{5} × \frac{3}{4}$
$\frac{4}{5} ÷ 3$ ○ $\frac{4}{5}$
$30 ÷ \frac{9}{10}$ ○ $30$
$7.8 ÷ 0.1$ ○ $7.8 × 10$
$4.5 × 0.6$ ○ $4.5$
$\frac{5}{6} × 4$ ○ $\frac{5}{6}$
$4.5 × \frac{5}{9}$ ○ $4 × \frac{5}{9}$
$\frac{1}{2} × 0$ ○ $0 ÷ \frac{1}{5}$
$2 ÷ 3$ ○ $2 × 3$
$\frac{4}{5} ÷ \frac{4}{3}$ ○ $\frac{3}{5} × \frac{3}{4}$
答案
$\frac{4}{5} ÷ 3$ < $\frac{4}{5}$
$30 ÷ \frac{9}{10}$ > $30$
$7.8 ÷ 0.1$ = $7.8 × 10$
$4.5 × 0.6$ < $4.5$
$\frac{5}{6} × 4$ > $\frac{5}{6}$
$4.5 × \frac{5}{9}$ > $4 × \frac{5}{9}$
$\frac{1}{2} × 0$ = $0 ÷ \frac{1}{5}$
$2 ÷ 3$ < $2 × 3$
$\frac{4}{5} ÷ \frac{4}{3}$ > $\frac{3}{5} × \frac{3}{4}$
$30 ÷ \frac{9}{10}$ > $30$
$7.8 ÷ 0.1$ = $7.8 × 10$
$4.5 × 0.6$ < $4.5$
$\frac{5}{6} × 4$ > $\frac{5}{6}$
$4.5 × \frac{5}{9}$ > $4 × \frac{5}{9}$
$\frac{1}{2} × 0$ = $0 ÷ \frac{1}{5}$
$2 ÷ 3$ < $2 × 3$
$\frac{4}{5} ÷ \frac{4}{3}$ > $\frac{3}{5} × \frac{3}{4}$
3. 填一填。
$(\ )× \dfrac{8}{15} = \dfrac{4}{15}$
$(\ ) + 0.25 = 1.25$
$(\ )× \dfrac{6}{11} = \dfrac{18}{55}$
$12÷ (\ ) = \dfrac{3}{4}$
$3÷ (\ ) = 0.03$
$\dfrac{5}{8}÷ (\ ) = \dfrac{25}{24}$
学校开展“体育健康月”活动,鼓励学生坚持每天锻炼。小宇第一周累计跑步12 km,第二周跑步距离是第一周的$\dfrac{3}{2}$,且第二周跑步距离恰好是全月计划跑步距离的$\dfrac{2}{5}$。小宇全月计划跑步多少千米?
反思 我错了()道题。
自我评价:
$(\ )× \dfrac{8}{15} = \dfrac{4}{15}$
$(\ ) + 0.25 = 1.25$
$(\ )× \dfrac{6}{11} = \dfrac{18}{55}$
$12÷ (\ ) = \dfrac{3}{4}$
$3÷ (\ ) = 0.03$
$\dfrac{5}{8}÷ (\ ) = \dfrac{25}{24}$
学校开展“体育健康月”活动,鼓励学生坚持每天锻炼。小宇第一周累计跑步12 km,第二周跑步距离是第一周的$\dfrac{3}{2}$,且第二周跑步距离恰好是全月计划跑步距离的$\dfrac{2}{5}$。小宇全月计划跑步多少千米?
反思 我错了()道题。
自我评价:
答案
$\frac{1}{2}$
$1$
$\frac{3}{5}$
$16$
$100$
$\frac{3}{5}$
$12× \frac{3}{2} ÷ \frac{2}{5} = 45(\mathrm{千米})$
答:小宇全月计划跑步45千米。
我错了(0)道题。
自我评价:我已掌握分数乘除法的计算规则,能正确解决相关实际应用问题。
$1$
$\frac{3}{5}$
$16$
$100$
$\frac{3}{5}$
$12× \frac{3}{2} ÷ \frac{2}{5} = 45(\mathrm{千米})$
答:小宇全月计划跑步45千米。
我错了(0)道题。
自我评价:我已掌握分数乘除法的计算规则,能正确解决相关实际应用问题。
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