Question

< > = ?

a)  23/11 .............32/11            2+3/11............3+2/11            2x3/11............3x2/11

     3x1/11...........3:1/11              3+1/11...........3-1/11             3-3/11............1-1/11

b)  6:3/19.....6:2/19       6+3/19.....6+2/19         6x3/19.....6x2/19         6-3/19.....6-2/19

Answer 1

a)  23/11 .....<........32/11            2+3/11......=......3+2/11            2x3/11.....=.......3x2/11

     3x1/11....=.......3:1/11              3+1/11......>.....3-1/11             3-3/11.....=.......1-1/11

b)  6:3/19..<...6:2/19       6+3/19...>..6+2/19         6x3/19..>...6x2/19         6-3/19..<...6-2/19

Answer 2

a)  23/11 < 32/11            2+3/11 < 3+2/11            2x3/11 = 3x2/11

     3x1/11 < 3:1/11              3+1/11 > 3-1/11             3-3/11 > 1-1/11

b)  6:3/19 < 6:2/19       6+3/19 > 6+2/19         6x3/19 > 6x2/19         6-3/19 < 6-2/19

Answer 3

`a)` vì `23<32`

`=>23/11 .....<........32/11`

`---------`

ta có :

`2 + 3/11= 22/11 + 3/11= 25/11`

`3+ 2/11= 33/11 + 2/11= 35/11`

vì `25< 35`

`=>  2+3/11...<.........3+2/11 `

`---------`

`2 xx 3/11= 6/11`

`3 xx 2/11= 6/11`

vì `6=6`

`=> 2xx3/11......=......3xx2/11`

`----------`

`3 xx 1/11= 3/11`

`3 : 1/11= 3 xx 11= 33`

`=>2xx3/11..<..........3xx2/11`

`----------`

`3 + 1/11= 33/11+1/11= 34/11`

`3-1/11= 33/11-1/11=32/11`

`=>3+1/11.....>......3-1/11`

`---------`

`3-3/11= 33/11-3/11= 30/11`

`1-1/11= 11/11-1/11=10/11`

`=>3-3/11.....>.......1-1/11`

`b)`

`6 : 3/19= 6 xx 19/3= 114/3`

`6  : 2/19= 6 xx 19/2= 114/2`

`=> 6:3/19..<...6:2/19 `

`---------`

`6 + 3/19= 114/19 + 3/19= 117/19`

`6+2/19= 114/19 + 2/19= 116/19`

`=> 6+3/19...>..6+2/19 `

`----------`

`6xx3/19= 18/19`

`6xx2/19=12/19`

`=>6xx3/19..>...6xx2/19`

`---------`

`6-3/19= 114/19 - 3/19= 111/19`

`6-2/19=114/19-2/19=112/19`

`=> 6-3/19..<...6-2/19`