28+5= 96-16= 38+20= 41-17=
46+54= 70-22= 35+14= 40+30=
81-15= 69-50= 84-11= 96-8=
还剩几个?
40×25%= 1.03×10= 3×45= 1÷10%= 2.8×=
1.57﹣0.85= 0.49÷0.7= 3.05+6.2= 0.6:0.75= kg:40g=