15.5× = 1÷ ×7= 2.1÷ =
0.75+ = - ×0= 12.6-1.7=
×5÷ ×5=
12×5÷12×5=
82+8×2= 0.375- +0.1=
1÷0.25= +1 = ×24= + =
400×0.02= 10÷ = 6 ×0= 3× ﹣ ×3=
0.57+4.3=
×=
73×101=
-=
2.4÷0.1=
2.6×-×0.6=