301. Есептеңдер: 1) 3·|−0,8| + 0,9·|6|; 2) 5/8·|0,8| + |−4,5| : 0,3; 3) 5/12·|−4/5| + 2,4 : |−3,6|; 4) 0,19 + |−0,17|·3 − |2,4| : 6.

1. \(3\cdot|-0.8|+0.9\cdot|6|=3\cdot0.8+0.9\cdot6=2.4+5.4=7.8\).
2. \(\frac{5}{8}\cdot|0.8|+|-4.5|:0.3=\frac{5}{8}\cdot0.8+4.5:0.3=0.5+15=15.5\).
3. \(\frac{5}{12}\cdot\left|-\frac{4}{5}\right|+2.4:|-3.6|=\frac{5}{12}\cdot\frac{4}{5}+2.4:3.6=\frac{1}{3}+\frac{2}{3}=1\).
4. \(0.19+|-0.17|\cdot3-|2.4|:6=0.19+0.17\cdot3-2.4:6=0.19+0.51-0.4=0.3\).

Ответ: 1) 7,8; 2) 15,5; 3) 1; 4) 0,3.