a: \(\dfrac{125}{1000}=\dfrac{125:125}{1000:125}=\dfrac{1}{8}\)
b: \(\dfrac{25}{50}=\dfrac{25:25}{50:25}=\dfrac{1}{2}\)
c: \(\dfrac{16}{32}=\dfrac{16:16}{32:16}=\dfrac{1}{2}\)
d: \(\dfrac{15}{45}=\dfrac{15:15}{45:15}=\dfrac{1}{3}\)
e: \(\dfrac{20}{100}=\dfrac{20:20}{100:20}=\dfrac{1}{5}\)
f: \(\dfrac{4}{16}=\dfrac{4:4}{16:4}=\dfrac{1}{4}\)
g: \(\dfrac{5}{50}=\dfrac{5:5}{50:5}=\dfrac{1}{10}\)
h: \(\dfrac{2}{18}=\dfrac{2:2}{18:2}=\dfrac{1}{9}\)
i: \(\dfrac{3}{12}=\dfrac{3:3}{12:3}=\dfrac{1}{4}\)
j: \(\dfrac{12}{36}=\dfrac{12:12}{36:12}=\dfrac{1}{3}\)
k: \(\dfrac{2}{10}=\dfrac{2:2}{10:2}=\dfrac{1}{5}\)
l: \(\dfrac{3}{24}=\dfrac{3:3}{24:3}=\dfrac{1}{8}\)
m: \(\dfrac{4}{28}=\dfrac{4:4}{28:4}=\dfrac{1}{7}\)
l: \(\dfrac{7}{49}=\dfrac{7:7}{49:7}=\dfrac{1}{7}\)
o: \(\dfrac{18}{36}=\dfrac{18:18}{36:18}=\dfrac{1}{2}\)
p: \(\dfrac{45}{60}=\dfrac{45:15}{60:15}=\dfrac{3}{4}\)
