÷= ×= 18÷= ×=
:= 75kg:= :15分=
51× 36×72+2.8×360
58.26-2.3= 16×(1-12.5%)= 5.4÷0.06= 3.5×75%+75%×6.5=
6a×2a= 1÷2.5+2.5×0.8=
90×80%= 96÷(1﹣90%)=
×÷×= 3.11×6=
4000×37.5%= ×=
+﹣+= a﹣a×0=
2- = 7.5÷0.25= 0.66+0.44= 1- + =
0.22= 1÷1%= 312-279= 6÷ = 3.57+4.3=
①
②
③0.79×99+0.79
④3.8×97+0.38×30
⑤
⑥(﹣)×9×12