80'in yüzde 20'si 16'dır. Hesaplama şu şekilde yapılır: 1. 80 ÷ 100 = 0.8 (80 sayısının 100'e bölümü). 2. 0.8 × 20 = 16 (0.8 sayısının 20 ile çarpımı).
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