Bài 4:
\(8dm=0,8m\\ 15dm^2=0,15m^2\\ 20cm=0,2m\\ 600m^2=0,06ha\\ 3dm=0,3m\\ \dfrac{1}{100}ha=0,01ha\\ 800dm^2=8m^2\)
Bài 6:
\(a,\dfrac{8}{10}=0,8\\ b,\dfrac{456}{1000}=0,456\\ c,\dfrac{15}{100}=0,15\\ d,\dfrac{3}{100}=0,03\\e,\dfrac{34}{1000}=0,034\\ g,\dfrac{6}{1000}=0,006\)
Bài 7:
\(a,0,7=\dfrac{7}{10}\\ b,1,2=\dfrac{6}{5}\\ c,0,56=\dfrac{14}{25}\\ d,0,089=\dfrac{89}{1000}\\ e,0,235=\dfrac{47}{200}\\ g,0,009=\dfrac{9}{1000}\)
Bài 8:
\(a,5\dfrac{3}{10}=5,3\\ b,9\dfrac{456}{1000}=9,456\\ c,78\dfrac{33}{100}=78,33\\d,85\dfrac{345}{1000}=85,345\\ e,10\dfrac{24}{1000}=10,24\\ g,8\dfrac{6}{1000}=8,006\)
Bài 9:
\(a,8,6\\ b,54,76\\ c,42,562\\ d,10,035\\ e,0,101\\ g,55,555\)
Bài 10:
\(a,2-3\\ b,4-7-5\\ c,4-6-7-8-9\\ d,2-3-4-4-5-6\)