36÷65 63÷79 4×824 3×928
5×=30 ÷7=7 ×4=32 63÷=7
0.25×28= 500×1%= 0.81× = 0.32-0.22=
8×4÷8×4= 1÷3× = 0.8÷0.01= 98÷22=