*43.5÷29= *1.82÷6.5= 1.25÷0.25=
36.9÷18= 6.88÷5.6≈ 14.2÷11≈
6.86×0.74= 12÷0.24= ☆0.755÷0.28≈ (得数保留两位小数)
① 9.7-22.78÷3.4
② 7.3÷1.25÷0.8
③ 5.6×10.1
④ 6.1×0.64+0.36×6.1
①0.83+1.675 ②756+1328 ③+ ④57%+