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?$\frac 35$?

=

?$\frac {6}{10}$?

=

?$\frac {9}{15}$?

√

÷

3

2

5

4

×

5

15

×

2

÷

4

1

×

2

10

÷

4

?$\frac 2{15}=\frac 4{30}，$??$\frac 8{60}=\frac 4{30}$?

?$\frac 34=\frac 9{12}，$??$\frac {18}{24}=\frac 9{12}$?

如圖：

故答案為：$\frac35$=$\frac6{10}$=$\frac9{15}$

$ \frac{3}{9}=\frac{1}{3}，\frac{1}{3}\;和\frac{3}{9}(\surd )$

$\frac{4}{16}=\frac{1}{4}，\frac{4}{16}≠\frac{1}{8}$

$\frac{8}{22}=\frac{4}{11}，\frac{8}{22}和\frac{4}{11}(\surd )$

$故答案為：\frac{1}{3}\;和\frac{3}{9}\left(\surd \right)；\frac{8}{22}和\frac{4}{11}(\surd )$

$\dfrac {6} {12}=\dfrac {6\div 3} {12\div 3}=\dfrac {2} {4}$

$\dfrac {1} {3}=\dfrac {1\times 5} {3\times 5}=\dfrac {5} {15}$

$\dfrac {1} {5}=\dfrac {1\times 3} {5\times 3}=\dfrac {3} {15}$

$\dfrac {4} {16}=\dfrac {4\div 4} {16\div 4}=\dfrac {1} {4}$

$故答案為：\div 3、\dfrac {2} {4}；\times 5、\dfrac {5} {15}；\dfrac {\times 3} {\times 3}、\dfrac {3} {15}；\dfrac {\div 4} {\div 4}、\dfrac {1} {4}$

$ \frac{2}{15}=\frac{2×2}{15×2}=\frac{4}{30}$

$\frac{8}{60}=\frac{8÷2}{60÷2}=\frac{4}{30}$

$\frac{3}{4}=\frac{3×3}{4×3}=\frac{9}{12}$

$\frac{18}{24}=\frac{18÷2}{24÷2}=\frac{9}{12}$

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