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Phạm Vũ Hoài Anh
Giới thiệu về bản thân
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\(\dfrac{1}{8}+\dfrac{1}{6}+\dfrac{1}{3}=\dfrac{3}{24}+\dfrac{4}{24}+\dfrac{8}{24}\)
\(=\dfrac{15}{24}=\dfrac{5}{8}\)
Theo bài ra, ta có: số lớn gấp 10 lần số bé.
Vậy số bé =\(\dfrac{1}{10}\)số lớn
Số bé là: 33
số lớn là 330
a) \(\dfrac{4}{9}.\dfrac{7}{5}:\dfrac{7}{9}=\dfrac{4}{9}.\dfrac{7}{5}.\dfrac{9}{7}\)
\(=\dfrac{4.7.9}{9.5.7}\)
\(=\dfrac{4}{5}\)
b) \(\dfrac{3}{4}.\dfrac{3}{2}+\dfrac{3}{4}.\dfrac{1}{2}=\dfrac{3}{4}.\left(\dfrac{3}{2}+\dfrac{1}{2}\right)\)
\(=\dfrac{3}{4}.2\)
\(=\dfrac{3}{2}\)
A. 35/48
7m9cm < 8m
7m9cm < 790 cm
7m9dm > 709 cm
990 m < 1 km
7dm8cm < 8m
4m25cm < 150 cm
4m25cm = 425 cm
4m5dm > 405 cm
2km50m < 2500m
7dm5cm = 75cm