一、直接写出得数。
$\frac{1}{5}×2=$
$\frac{2}{7}×3=$
$6×\frac{1}{3}=$
$32×\frac{5}{16}=$
$\frac{2}{3}×\frac{1}{2}=$
$\frac{3}{4}×\frac{1}{3}=$
$\frac{5}{7}×\frac{2}{5}=$
$\frac{2}{5}×\frac{1}{4}=$
$1.2×\frac{1}{6}=$
$\frac{6}{25}×100=$
$5.4×\frac{5}{9}=$
$\frac{10}{9}×0.9=$
$\frac{1}{5}×2=$
$\frac{2}{7}×3=$
$6×\frac{1}{3}=$
$32×\frac{5}{16}=$
$\frac{2}{3}×\frac{1}{2}=$
$\frac{3}{4}×\frac{1}{3}=$
$\frac{5}{7}×\frac{2}{5}=$
$\frac{2}{5}×\frac{1}{4}=$
$1.2×\frac{1}{6}=$
$\frac{6}{25}×100=$
$5.4×\frac{5}{9}=$
$\frac{10}{9}×0.9=$
答案
1.$\frac{2}{5}$ 2.$\frac{6}{7}$ 3.$2$ 4.$10$ 5.$\frac{1}{3}$ 6.$\frac{1}{4}$ 7.$\frac{2}{7}$ 8.$\frac{1}{10}$ 9.$\frac{1}{5}$ 10.$24$ 11.$3$ 12.$1$
二、在○里填上“>”“<”或“=”。
$\frac{1}{4}×\frac{8}{9} ◯ \frac{1}{4}×1$
$\frac{5}{6}×1 ◯ \frac{5}{6}×\frac{3}{5}$
$\frac{2}{3}×0 ◯ \frac{2}{3}×\frac{3}{2}$
$\frac{7}{10}×\frac{3}{2} ◯ \frac{7}{10}×\frac{4}{5}$
$\frac{1}{2}×9 ◯ \frac{1}{4}×18$
$\frac{7}{8}×\frac{3}{7} ◯ \frac{7}{8}×\frac{7}{3}$
$\frac{4}{5}×\frac{5}{4} ◯ \frac{4}{5}×\frac{4}{5}$
$\frac{3}{10}×3 ◯ \frac{3}{10}×\frac{1}{3}$
$\frac{6}{5}×\frac{1}{2} ◯ \frac{5}{6}×\frac{1}{2}$
$\frac{1}{4}×\frac{8}{9} ◯ \frac{1}{4}×1$
$\frac{5}{6}×1 ◯ \frac{5}{6}×\frac{3}{5}$
$\frac{2}{3}×0 ◯ \frac{2}{3}×\frac{3}{2}$
$\frac{7}{10}×\frac{3}{2} ◯ \frac{7}{10}×\frac{4}{5}$
$\frac{1}{2}×9 ◯ \frac{1}{4}×18$
$\frac{7}{8}×\frac{3}{7} ◯ \frac{7}{8}×\frac{7}{3}$
$\frac{4}{5}×\frac{5}{4} ◯ \frac{4}{5}×\frac{4}{5}$
$\frac{3}{10}×3 ◯ \frac{3}{10}×\frac{1}{3}$
$\frac{6}{5}×\frac{1}{2} ◯ \frac{5}{6}×\frac{1}{2}$
答案
1.< 2.> 3.< 4.> 5.= 6.< 7.> 8.> 9.>
三、玉兔号月球车的长是1.5 m,宽是长的$\frac{2}{3}$,高是宽的$\frac{11}{10}$,玉兔号月球车的高是多少米?
答案
$1.5×\frac{2}{3}×\frac{11}{10}=\frac{11}{10}(m)$
四、王奶奶喜欢捏小面人,捏一个孙悟空要用250 g面团,捏一个猪八戒需要的面团比捏一个孙悟空多$\frac{2}{5}$,捏一个猪八戒需要多少克面团?
答案
$250+250×\frac{2}{5}=350(g)$
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