12: == : = :12.
被除数÷除数= … , × + =被除数.
括号里最大能填几?5× <36; ×6<50.
被除数 760 850 156 1652980 840除数 1752 118 20 商 40 50 314 4930
(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.
+329=576 ÷13="37" ﹣235=235 ×37="2331" ÷569=0 9286﹣ =80829× =609 1288÷ =23 763﹣ =0.