在横线里填上“>”“<”或“=”.54.2+1.3 54.2 2.47×0.99 2.4713.34×0 0÷2.89﹣2.89 0.68 0.68×11. 1. 7.25÷0.89 7.25×0.89.
=18: = ÷40= [填小数].
==10÷ = ÷36.
:16= ÷ ==0.125.
a÷b=,那么=. .
0.5== ÷2=25÷ .