÷3=
×15=
1+2%=
+ × =
2- =
×75%=
×4× =
×9÷ ×9=
①2.4÷×
②(+﹣)×36
③×99
④29.3﹣12.6﹣7.4
⑤5.9×8.5﹣49×0.85
⑥×[6÷(﹣)]