12.87 - 6.94 - 3.06 0.65 × 3.7 + 0.37 ×3.5 1.3×20%+7.7×20% 99.9÷2.5÷48.4 + 7.9 - 6.4 32 × 2.5 × 12.585.5 - 16.5 - 3.5 125 × 24 × 8 ×...
12.87 - 6.94 - 3.06 0.65 × 3.7 + 0.37 ×3.5 1.3×20%+7.7×20% 99.9÷2.5÷48.4 + 7.9 - 6.4 32 × 2.5 × 12.585.5 - 16.5 - 3.5 125 × 24 × 8 ×...