mohon dengan cara dan benar

1. 18,2 × 40 % = 18.2 × 40/100
= 18.2 × 40 = 728 ÷ 100 = 7.28

2. 20 % × 7.5 = 7.5 × 20 %
= 7.5 × 20 / 100
= 150 / 100 = 1.5

3. 60 % × 4.4 = 4.4 × 60 %
= 4.4 × 60 / 100 = 264 ÷ 100 = 2.64

4. 3.4 ton + 30 kwintal - 15 kwintal =
3.4 ton = 3400 kg
30 kwintal = 3000 kg
15 kwintal = 1500 kg
= 3400 + 3000 = 6400 - 1500 = 4900 kg

5.2150 cm - ( 6,5 m + 80 dm ) =
6.5 m = 650 cm
80 dm = 800 cm
= 650 + 800 = 1450 cm
= 2150 - 1450 = 700 cm