5.3×6.3+2.3= 4.4×7.3+5.3= 4×8.8+1.5= 4.1×0.8-0.2= 9.9×1.4+0.6= 6.4×2.4+3.6= 12.48-4×9.7= 9.8×1.3-0.3= 4.8×9.1-0.5= 2.9+0.6×7.5= 4.2×1.8-0.1= 8.6×6.5+6.4= 5.59-3×4.3= 0.2×5.6+2.5= 3.053-0...