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竖式计算2.3÷0.46

可以除得尽:161÷0.46 = 350

2.7÷0.46 =270 ÷ 46 ≈5.869 ≈5.87 竖式见图:

(1)81.9÷39=2.1; 2.13981.9 78 3 9 3 9 0;验算: 3 9×2.1 3 978 81.9;(2)0.46×7.2≈3.3; 0.4 6 ×7.2 9 23 2 2 3.3 1 2;(3)3.684÷0.12=30.7;

0.25×0.048=0.0123.45×1.2=4.1428.8÷0.64=450.462÷0.14=3.30.37×0.48≈0.185.514÷0.72≈7.52.

5.4÷0.6+(2.3-0.46) =9+0.84 =9.84

0.46÷12 ≈ 0.0383≈ 0.038≈ 0.04≈ 0.0≈ 0.03833(保留5位小数)

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