(1) +16.9=131.6(2) ×23=828(3) ÷65=26(4)513.02﹣ =96.7(5)563.5﹣ +39.2=156.9(6)125.3﹣(18.25+ )=63.
:10=0.2= ÷25= %
÷8=12: =0.75== <填百分数>
÷16==15: = :24= (用小数表示)
:5=0.8=20/ = %
3÷5=3: == ÷40= %