1
:0.75 1 2
=
:3 2
3 4
=(
×3 2
):(4 3
×3 4
)4 3
=2:1
=2÷1
=2
0.9分米:3米
=0.9分米:30分米
=
:309 10
=(
×9 10
):(30×10 3
)10 3
=3:100
=3÷100
=0.03
:0.3757 8
=
:7 8
375 1000
=
:7 8
3 8
=7:3
=7÷3
=
7 3
3
:2 3
2 11
=
:11 3
2 11
=(
×33):(11 3
×33)2 11
=121:6
=121÷6
=
121 6