Vở bài tập Toán lớp 5 Kết nối tri thức Bài 4: Phân số thập phân

a) \(\frac{1}{2} = \frac{1 \times ...}{2 \times ....} = \frac{...}{10}\)

b) \(\frac{63}{300} = \frac{63: ...}{300: ....} = \frac{...}{100}\)

c) \(\frac{12}{25} = \frac{12 \times ...}{25 \times ....} = \frac{...}{100}\)

d) \(\frac{145}{5000} = \frac{145 : ...}{5000 : ....} = \frac{...}{1000}\)

a) \(\frac{1}{2} = \frac{1 \times 5}{2 \times 5} = \frac{5}{10}\)

b) \(\frac{63}{300} = \frac{63: 3}{300: 3} = \frac{21}{100}\)

c) \(\frac{12}{25} = \frac{12 \times 4}{25 \times 4} = \frac{48}{100}\)

d) \(\frac{145}{5000} = \frac{145 : 5}{5000 : 5} = \frac{29}{1000}\)

\(\frac{72}{80} = .........................\)

\(\frac{444}{400} = .........................\)

\(\frac{27}{25} = .........................\)

\(\frac{100}{125} = .........................\)

\(\frac{1}{4} = .........................\)

\(\frac{5}{8} = .........................\)

\(\frac{72}{80} = \frac{72 : 8}{80 : 8} = \frac{9}{10}\)

\(\frac{444}{400} = \frac{444 : 4}{400 : 4} = \frac{111}{100}\)

\(\frac{27}{25} =\frac{27 \times 4}{25 \times 4}= \frac{108}{100}\)

\(\frac{100}{125} = \frac{100 \times 8}{125 \times 8 } = \frac{800}{1000}\)

\(\frac{1}{4} = \frac{1 \times 25 }{4 \times 25} = \frac{25}{100}\)

\(\frac{5}{8} = \frac{5 \times 125}{8\times125 } = \frac{625}{1000}\)