Question

SO SANHS CÁC SỐ HỮU TỈ SAU:

a/\(\frac{325}{260}\)và\(\frac{876}{320}\)

b/\(\frac{13}{9}\)và\(\frac{8}{3}\)

c/\(\frac{18}{-39}\)và\(\frac{-17}{41}\)

d/\(\frac{-15}{25}\)và\(\frac{-151515}{232323}\)

Answer 1

a/     >

b/     <

c/      <

d/      =

Answer 2

a) \(\frac{325}{260}=\frac{650}{520}< \frac{650}{320}< \frac{876}{320}\)

\(\Rightarrow\frac{325}{260}< \frac{876}{320}.\)

b) \(\frac{13}{9}< \frac{24}{9}=\frac{8}{3}\)

\(\Rightarrow\frac{13}{9}< \frac{8}{3}.\)

c) Do \(18>-17;-39< 41\)

\(\Rightarrow\frac{18}{-39}>\frac{-17}{41}.\)

d) \(\frac{-151515}{232323}=\frac{\left(-15\right).10101}{23.10101}=\frac{-15}{23}\)

Mà \(\frac{-15}{25}< \frac{-15}{23}\)

\(\Rightarrow\frac{-15}{25}< \frac{-151515}{232323}.\)

Answer 3

a, Ta có: \(\frac{325}{260}=\frac{5}{4}=\frac{400}{320}< \frac{876}{320}\)

\(\Rightarrow\frac{325}{260}< \frac{876}{320}\)

b, Ta có: \(\frac{13}{9}< \frac{18}{9}=\frac{6}{3}< \frac{8}{3}\)

\(\Rightarrow\frac{13}{9}< \frac{8}{3}\)

d, Ta có: \(\frac{151515}{232323}=\frac{15}{23}>\frac{15}{25}\)

\(\Rightarrow\frac{-15}{25}>\frac{-151515}{232323}\)