1. 在直线上面的括号里填合适的分数,在直线下面的括号里填合适的小数。

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0 1
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0 1
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答案
$\frac{1}{5}$
$\frac{2}{5}$
$\frac{3}{5}$
$\frac{9}{10}$
0.2
0.4
0.6
0.9
$\frac{2}{5}$
$\frac{3}{5}$
$\frac{9}{10}$
0.2
0.4
0.6
0.9
2. 把下面的分数化成小数。
$\boldsymbol{\frac{8}{25} = }$
$\boldsymbol{\frac{7}{10} = }$
$\boldsymbol{\frac{49}{100} = }$
$\boldsymbol{\frac{9}{10} = }$
$\boldsymbol{\frac{375}{1000} = }$
$\boldsymbol{\frac{274}{100} = }$
$\boldsymbol{\frac{8}{25} = }$
$\boldsymbol{\frac{7}{10} = }$
$\boldsymbol{\frac{49}{100} = }$
$\boldsymbol{\frac{9}{10} = }$
$\boldsymbol{\frac{375}{1000} = }$
$\boldsymbol{\frac{274}{100} = }$
答案
0.32
0.7
0.49
0.9
0.375
2.74
0.7
0.49
0.9
0.375
2.74
3. 把下面的小数化成最简分数。
$\boldsymbol{0.6 = }$
$\boldsymbol{0.25 = }$
$\boldsymbol{1.875 = }$
$\boldsymbol{0.47 = }$
$\boldsymbol{0.55 = }$
$\boldsymbol{0.8 = }$
$\boldsymbol{0.6 = }$
$\boldsymbol{0.25 = }$
$\boldsymbol{1.875 = }$
$\boldsymbol{0.47 = }$
$\boldsymbol{0.55 = }$
$\boldsymbol{0.8 = }$
答案
$\frac{3}{5}$
$\frac{1}{4}$
$\frac{15}{8}$
$0.6=\frac{6}{10}=\frac{3}{5}$
$0.25=\frac{25}{100}=\frac{1}{4}$
$1.875=1+\frac{875}{1000}=1+\frac{7}{8}=\frac{15}{8}$
$\frac{47}{100}$
$\frac{11}{20}$
$\frac{4}{5}$
$0.47=\frac{47}{100}$
$0.55=\frac{55}{100}=\frac{11}{20}$
$0.8=\frac{8}{10}=\frac{4}{5}$
$\frac{1}{4}$
$\frac{15}{8}$
$0.6=\frac{6}{10}=\frac{3}{5}$
$0.25=\frac{25}{100}=\frac{1}{4}$
$1.875=1+\frac{875}{1000}=1+\frac{7}{8}=\frac{15}{8}$
$\frac{47}{100}$
$\frac{11}{20}$
$\frac{4}{5}$
$0.47=\frac{47}{100}$
$0.55=\frac{55}{100}=\frac{11}{20}$
$0.8=\frac{8}{10}=\frac{4}{5}$
4. 在〇里填“>”“<”或“=”。
$\frac{3}{8}$〇0.38 0.85〇$\frac{17}{20}$ $\frac{1}{8}$〇0.125 $\frac{2}{3}$〇$\frac{3}{10}$
$\frac{5}{6}$〇0.83 0.45〇$\frac{3}{4}$ $\frac{6}{25}$〇0.125 4.45〇$\frac{9}{2}$
$\frac{3}{8}$〇0.38 0.85〇$\frac{17}{20}$ $\frac{1}{8}$〇0.125 $\frac{2}{3}$〇$\frac{3}{10}$
$\frac{5}{6}$〇0.83 0.45〇$\frac{3}{4}$ $\frac{6}{25}$〇0.125 4.45〇$\frac{9}{2}$
答案
<
=
=
>
>
<
>
<
=
=
>
>
<
>
<
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