a, 9; 7; 5; 2

b, 1; 6; 4; 8

a) 9, 7, 5 2

b) 1, 4, 6, 8

a. 9-7-5-2

b. 1-4-6-8

7/7 ; 1/7 ; 6/5; 5/2

1/7 ; 7/7 ; 6/5 ; 5/2

1/7 ; 7/7 ; 6/5 ; 5/2

15/6; 2004/1999; 1;12/15;3/5

a) Ta có: 5 216 < 5 612 < 6 251 < 6 521

Các số sắp xếp theo thứ tự từ bé đến lớn là 5 216; 5 612; 6 251; 6 521

b) Ta có: 21 025 > 20 152 > 12 509 > 9 999

Các số sắp xếp theo thứ tự từ lớn đến bé: 21 025; 20 152; 12 509; 9 999

a) 5216 < 5612 < 6251 < 6521

b) 21025 > 20152 > 12509 > 9999

\(\dfrac{1}{2}=\dfrac{1\cdot24}{2\cdot24}=\dfrac{24}{48}\)

\(\dfrac{3}{48}=\dfrac{3\cdot1}{48\cdot1}=\dfrac{3}{48}\)

\(\dfrac{8}{12}=\dfrac{8\cdot4}{12\cdot4}=\dfrac{32}{48}\)

\(\dfrac{5}{6}=\dfrac{5\cdot8}{6\cdot8}=\dfrac{40}{48}\)

\(\dfrac{7}{12}=\dfrac{7\cdot4}{12\cdot4}=\dfrac{28}{48}\)

mà 3<24<28<32<40

nên \(\dfrac{3}{48}< \dfrac{1}{2}< \dfrac{7}{12}< \dfrac{8}{12}< \dfrac{5}{6}\)

3/48,1/2;7/12;8/12;5/6

3/48, 1/2, 7/12, 8/12, 5/6
hk tốt

7/12,5/6,1/2
 

1/2 ;5/6 ;7;12

\(\dfrac{8}{3};\dfrac{7}{7};\dfrac{6}{7};\dfrac{1}{2};\dfrac{3}{8}\)

\(\dfrac{8}{3}\);\(\dfrac{7}{7}\);\(\dfrac{6}{7}\);\(\dfrac{1}{2}\);\(\dfrac{3}{8}\)

chúc bạn học tốt

TL

a) 6;6,01;6,02;6,03;6,04;6,05;6,1

b) 6,1;6,05;6,04;6,03;6,02;6,01;6

~HT~