商的近似值(1) 1. 0.666...≈ 0.667 1.8383...≈ 1.838 0.3777...≈ 0.378 6.9292...≈ 6.929 2.保留一位小数保留两位小数保留三位小数0.5÷0.60.80.830.8330.66÷1.80.40.370.367 3.(1)3.81÷7 ≈ 0.54 3.2÷4.2 ≈ 0.76 (2)6.4÷1.7 ≈ 3.8 0.173÷0.47 ≈ 0.4 (3)8.4÷4.5 ≈ 1.867 0.43÷0.36 ≈ 1.194 4. 56÷(8.6÷2)= 56÷4.3 ≈ 13 |