①682÷60=
②640÷78=
③435÷73=
④519÷56=
50本
79本
49本
45本
小丽
+ = 1- = 1.25× = - =
0.9+99×0.9= 0÷ = 1÷ = -0.5=
0.6×101= 3.2×2.5×12.5=
﹣1.7,﹣3,+ , 120%