\(a,5=\dfrac{20}{4};11=\dfrac{44}{4};21=\dfrac{84}{4};200=\dfrac{800}{4};125=\dfrac{500}{4};2000=\dfrac{8000}{4}\\ b,2=\dfrac{108}{54};3=\dfrac{108}{36};108=\dfrac{108}{1};1=\dfrac{108}{108};9=\dfrac{108}{12};4=\dfrac{108}{27};6=\dfrac{108}{18}\)

giúp mik với ạ!!!

a) $\frac{1}{2}$ = 1 : 2      ;    $\frac{3}{4}$= 3 : 4                                                  

$\frac{3}{{10}} = 3:10$     ;    $\frac{{11}}{6} = 11:6$

b) Hình 1: Phân số $\frac{3}{3}$ = 1

Hình 2: Phân số $\frac{5}{5}$ = 1

Hình 3: Phân số $\frac{8}{8}$ = 1

1.
a) 10=\(\dfrac{40}{4}\)

b) 25= \(\dfrac{100}{4}\)

2.

a) 11=\(\dfrac{11}{1}\)

b) 276=\(\dfrac{276}{1}\)

c) 158=\(\dfrac{158}{1}\)

3.

\(\dfrac{1}{1};\dfrac{2}{2};\dfrac{3}{3};\dfrac{4}{4};\dfrac{5}{5}\)

\(8=\dfrac{8}{1};14=\dfrac{14}{1};32=\dfrac{32}{1};0=\dfrac{0}{1};1=\dfrac{1}{1}\)

$5 = \frac{5}{1}$  ;   $14 = \frac{{14}}{1}$   ;   $327 = \frac{{327}}{1}$

$1 = \frac{1}{1}$  ;   $0 = \frac{0}{1}$

\(5=\dfrac{5}{1}\)

\(14=\dfrac{14}{1}\)

\(327=\dfrac{327}{1}\)

\(1=\dfrac{1}{1}\)

\(0=\dfrac{0}{1}\)

\(\dfrac{3}{1};\dfrac{1}{1};\dfrac{13}{1};\dfrac{25}{1};\dfrac{200}{1};\dfrac{11}{1}\)

.

\(\dfrac{9}{3};\dfrac{1}{1};\dfrac{25}{5};\dfrac{49}{7};\dfrac{169}{13};\dfrac{625}{25};\dfrac{400440121}{20011}\)

\(7:a.2=\dfrac{7}{a.2}\)

a=7a/7

2=14/7

9b=63b/7

6=6/1                             1=1/1

27=27/1                           0=0/1

3=3/1