Question

1 4 ×（4.85÷ 5 18 -3.6+6.15×3 3 5 ）+[5.5-1.75×（1 2 3

1 4 ×（4.85÷ 5 18 -3.6+6.15×3 3 5 ）+[5.5-1.75×（1 2 3 + 19 21 ）]=______．

Answer 1

1 4 ×（4.85÷ 5 18 -3.6+6.15×3 3 5 ）+[5.5-1.75×（1 2 3 + 19 21 ）] = 1 4 ×（4.85× 18 5 -3.6+6.15× 18 5 ）+[5.5-1.75× 18 7 ] = 1 4 ×[3.6×（4.85-1+6.15）]+[5.5- 7 4 × 18 7 ] = 1 4 ×3.6×10+[5.5-4.5] =9+1 =10； 故答案为：10．