Bài làm
\(\frac{1}{10}+\frac{20}{100}+\frac{300}{1000}+\frac{4000}{10000}\)
\(=\frac{1}{10}+\frac{2}{10}+\frac{3}{10}+\frac{4}{10}\)
\(=\frac{1+2+3+4}{10}\)
\(=\frac{10}{10}\)
\(=1\)
# Học tốt #
\(\frac{1}{10}+\frac{20}{100}+\frac{300}{1000}+\frac{4000}{10000}\)
=\(\frac{1}{10}+\frac{2}{10}+\frac{3}{10}+\frac{4}{10}\)
= \(\frac{1+2+3+4}{10}\)
=\(\frac{10}{10}\)
= 1