1 求下面各比的比值。
65:20=
10:$\frac{5}{7}=$
$1\frac{1}{2}:0.03=$
0.28:0.7=
25km:150m=
$\frac{2}{3}:\frac{5}{6}=$
36kg:4800g=
96:14=
25m:180cm=
65:20=
10:$\frac{5}{7}=$
$1\frac{1}{2}:0.03=$
0.28:0.7=
25km:150m=
$\frac{2}{3}:\frac{5}{6}=$
36kg:4800g=
96:14=
25m:180cm=
答案:
$\frac{13}{4}$
14
50
$\frac{2}{5}$
$\frac{500}{3}$
$\frac{4}{5}$
$\frac{15}{2}$
$\frac{48}{7}$
$\frac{125}{9}$
14
50
$\frac{2}{5}$
$\frac{500}{3}$
$\frac{4}{5}$
$\frac{15}{2}$
$\frac{48}{7}$
$\frac{125}{9}$
2 计算下面各题。
$\frac{5}{6}×\frac{8}{15}+\frac{3}{5}$
$20\%÷\frac{1}{4}+\frac{1}{5}$
$\frac{7}{6}×\frac{12}{13}×\frac{13}{14}$
$\frac{8}{9}÷\frac{5}{18}÷\frac{9}{10}$
$\frac{18}{19}÷\frac{18}{17}×\frac{38}{17}$
$\frac{5}{32}×\frac{9}{4}÷\frac{3}{10}$
$\frac{3}{5}×\frac{1}{6}×\frac{5}{7}$
$1-\frac{4}{9}÷\frac{4}{5}$
$(\frac{5}{8}+\frac{5}{6})×48$
$1-\frac{3}{8}÷\frac{3}{5}$
$(\frac{7}{6}-\frac{5}{6})×\frac{1}{3}$
$\frac{2}{3}×\frac{5}{6}-\frac{1}{6}$
$\frac{5}{6}×\frac{8}{15}+\frac{3}{5}$
$20\%÷\frac{1}{4}+\frac{1}{5}$
$\frac{7}{6}×\frac{12}{13}×\frac{13}{14}$
$\frac{8}{9}÷\frac{5}{18}÷\frac{9}{10}$
$\frac{18}{19}÷\frac{18}{17}×\frac{38}{17}$
$\frac{5}{32}×\frac{9}{4}÷\frac{3}{10}$
$\frac{3}{5}×\frac{1}{6}×\frac{5}{7}$
$1-\frac{4}{9}÷\frac{4}{5}$
$(\frac{5}{8}+\frac{5}{6})×48$
$1-\frac{3}{8}÷\frac{3}{5}$
$(\frac{7}{6}-\frac{5}{6})×\frac{1}{3}$
$\frac{2}{3}×\frac{5}{6}-\frac{1}{6}$
答案:
$\frac{47}{45}$
1
1
$\frac{32}{9}$
2
$\frac{75}{64}$
$\frac{1}{14}$
$\frac{4}{9}$
70
$\frac{3}{8}$
$\frac{1}{9}$
$\frac{7}{18}$
1
1
$\frac{32}{9}$
2
$\frac{75}{64}$
$\frac{1}{14}$
$\frac{4}{9}$
70
$\frac{3}{8}$
$\frac{1}{9}$
$\frac{7}{18}$
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