3<span>кг.900г= 3900г</span>
<span><span>2 кг.70 г.=2070г</span></span>
<span><span>11 кг = 11000г</span></span>
<span><span>
</span></span>
<span><span><span> 6000 кг.= 6т</span></span></span>
<span><span><span><span> 5000 ц= 500 т</span></span></span></span>
<span><span><span><span><span>18000 кг= 18 т</span></span></span></span></span>