在横线里填上“>”、“<”或“=”.40×605 506×40 32×600 6×3200 53019000 5302万.
=18: = :20== ÷40.
: =15÷ == (填小数).
= : ==6÷ .
0.6==18÷ = :10= %
:8=0.8: =0.2= .