①26+7930÷26
②÷+×1.8
③8÷14×3.7+10.3×
④(39+39+39+39)×0.25
⑤×(+÷)
⑥÷[(+)×]
261﹣99= 17÷34= 2.1+0.79= 80×125%=
÷36= 38.38÷38= +×0= ×3÷×3=