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1 化简下面各比。
$\frac{8}{11}:0.8=$
$0.13:26=$
$5.5:4.5=$
$0.75:0.25=$
$\frac{2}{3}:\frac{1}{4}=$
$\frac{5}{14}:\frac{6}{7}=$
$\frac{1}{10}:\frac{2}{5}=$
$0.1:0.5=$
$0.6:0.3=$
$\frac{5}{12}:\frac{5}{24}=$
$\frac{1}{11}:\frac{5}{22}=$
$1.25:3=$
$7:3.5=$
$1.4:2.1=$
$\frac{8}{9}:\frac{2}{3}=$
$\frac{8}{11}:0.8=$
$0.13:26=$
$5.5:4.5=$
$0.75:0.25=$
$\frac{2}{3}:\frac{1}{4}=$
$\frac{5}{14}:\frac{6}{7}=$
$\frac{1}{10}:\frac{2}{5}=$
$0.1:0.5=$
$0.6:0.3=$
$\frac{5}{12}:\frac{5}{24}=$
$\frac{1}{11}:\frac{5}{22}=$
$1.25:3=$
$7:3.5=$
$1.4:2.1=$
$\frac{8}{9}:\frac{2}{3}=$
答案：
$10:11$；$1:200$；$11:9$；$3:1$；$8:3$；$5:12$；$1:4$；$1:5$；$2:1$；$2:1$；$2:5$；$5:12$；$2:1$；$2:3$；$4:3$
$\frac{8}{11}:0.8=\frac{8}{11}:\frac{4}{5}=(\frac{8}{11}×55):(\frac{4}{5}×55)=40:44=10:11$
$0.13:26=13:2600=1:200$
$5.5:4.5=55:45=11:9$
$0.75:0.25=75:25=3:1$
$\frac{2}{3}:\frac{1}{4}=(\frac{2}{3}×12):(\frac{1}{4}×12)=8:3$
$\frac{5}{14}:\frac{6}{7}=(\frac{5}{14}×14):(\frac{6}{7}×14)=5:12$
$\frac{1}{10}:\frac{2}{5}=(\frac{1}{10}×10):(\frac{2}{5}×10)=1:4$
$0.1:0.5=1:5$
$0.6:0.3=6:3=2:1$
$\frac{5}{12}:\frac{5}{24}=(\frac{5}{12}×24):(\frac{5}{24}×24)=10:5=2:1$
$\frac{1}{11}:\frac{5}{22}=(\frac{1}{11}×22):(\frac{5}{22}×22)=2:5$
$1.25:3=125:300=5:12$
$7:3.5=70:35=2:1$
$1.4:2.1=14:21=2:3$
$\frac{8}{9}:\frac{2}{3}=(\frac{8}{9}×9):(\frac{2}{3}×9)=8:6=4:3$
$\frac{8}{11}:0.8=\frac{8}{11}:\frac{4}{5}=(\frac{8}{11}×55):(\frac{4}{5}×55)=40:44=10:11$
$0.13:26=13:2600=1:200$
$5.5:4.5=55:45=11:9$
$0.75:0.25=75:25=3:1$
$\frac{2}{3}:\frac{1}{4}=(\frac{2}{3}×12):(\frac{1}{4}×12)=8:3$
$\frac{5}{14}:\frac{6}{7}=(\frac{5}{14}×14):(\frac{6}{7}×14)=5:12$
$\frac{1}{10}:\frac{2}{5}=(\frac{1}{10}×10):(\frac{2}{5}×10)=1:4$
$0.1:0.5=1:5$
$0.6:0.3=6:3=2:1$
$\frac{5}{12}:\frac{5}{24}=(\frac{5}{12}×24):(\frac{5}{24}×24)=10:5=2:1$
$\frac{1}{11}:\frac{5}{22}=(\frac{1}{11}×22):(\frac{5}{22}×22)=2:5$
$1.25:3=125:300=5:12$
$7:3.5=70:35=2:1$
$1.4:2.1=14:21=2:3$
$\frac{8}{9}:\frac{2}{3}=(\frac{8}{9}×9):(\frac{2}{3}×9)=8:6=4:3$
2 求下面各比的比值。
$4:12=$
$32:4=$
$\frac{1}{2}:0.25=$
$\frac{1}{3}:\frac{1}{4}=$
$\frac{6}{7}:12=$
$24:18=$
$2.8:1.2=$
$7:2.1=$
$0.25:\frac{1}{4}=$
$0.3:0.9=$
$60:45=$
$\frac{2}{7}:0.5=$
$\frac{1}{3}:\frac{1}{2}=$
$\frac{4}{5}:\frac{1}{5}=$
$3:1.5=$
$1:0.25=$
$0.875:\frac{1}{4}=$
$0.2:0.08=$
$4:12=$
$32:4=$
$\frac{1}{2}:0.25=$
$\frac{1}{3}:\frac{1}{4}=$
$\frac{6}{7}:12=$
$24:18=$
$2.8:1.2=$
$7:2.1=$
$0.25:\frac{1}{4}=$
$0.3:0.9=$
$60:45=$
$\frac{2}{7}:0.5=$
$\frac{1}{3}:\frac{1}{2}=$
$\frac{4}{5}:\frac{1}{5}=$
$3:1.5=$
$1:0.25=$
$0.875:\frac{1}{4}=$
$0.2:0.08=$
答案：
$\frac{1}{3}$；$8$；$2$；$\frac{4}{3}$；$\frac{1}{14}$；$\frac{4}{3}$；$\frac{7}{3}$；$\frac{10}{3}$；$1$；$\frac{1}{3}$；$\frac{4}{3}$；$\frac{4}{7}$；$\frac{2}{3}$；$4$；$2$；$4$；$3.5$；$2.5$
$4:12=4÷12=\frac{1}{3}$
$32:4=32÷4=8$
$\frac{1}{2}:0.25=0.5÷0.25=2$
$\frac{1}{3}:\frac{1}{4}=\frac{1}{3}×4=\frac{4}{3}$
$\frac{6}{7}:12=\frac{6}{7}÷12=\frac{1}{14}$
$24:18=24÷18=\frac{4}{3}$
$2.8:1.2=28÷12=\frac{7}{3}$
$7:2.1=70÷21=\frac{10}{3}$
$0.25:\frac{1}{4}=0.25÷0.25=1$
$0.3:0.9=0.3÷0.9=\frac{1}{3}$
$60:45=60÷45=\frac{4}{3}$
$\frac{2}{7}:0.5=\frac{2}{7}÷\frac{1}{2}=\frac{4}{7}$
$\frac{1}{3}:\frac{1}{2}=\frac{1}{3}×2=\frac{2}{3}$
$\frac{4}{5}:\frac{1}{5}=4$
$3:1.5=2$
$1:0.25=4$
$0.875:\frac{1}{4}=0.875÷0.25=3.5$
$0.2:0.08=20÷8=2.5$
$4:12=4÷12=\frac{1}{3}$
$32:4=32÷4=8$
$\frac{1}{2}:0.25=0.5÷0.25=2$
$\frac{1}{3}:\frac{1}{4}=\frac{1}{3}×4=\frac{4}{3}$
$\frac{6}{7}:12=\frac{6}{7}÷12=\frac{1}{14}$
$24:18=24÷18=\frac{4}{3}$
$2.8:1.2=28÷12=\frac{7}{3}$
$7:2.1=70÷21=\frac{10}{3}$
$0.25:\frac{1}{4}=0.25÷0.25=1$
$0.3:0.9=0.3÷0.9=\frac{1}{3}$
$60:45=60÷45=\frac{4}{3}$
$\frac{2}{7}:0.5=\frac{2}{7}÷\frac{1}{2}=\frac{4}{7}$
$\frac{1}{3}:\frac{1}{2}=\frac{1}{3}×2=\frac{2}{3}$
$\frac{4}{5}:\frac{1}{5}=4$
$3:1.5=2$
$1:0.25=4$
$0.875:\frac{1}{4}=0.875÷0.25=3.5$
$0.2:0.08=20÷8=2.5$
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