<span>3 кг =30г</span>
<span><span>200см =2м</span></span>
<span><span><span>40 дм=4м</span></span></span>
<span><span><span><span>8 см =80мм</span></span></span></span>
<span><span><span><span><span>50 ц =5т</span></span></span></span></span>
<span><span><span><span><span><span>21000м=2100км</span></span></span></span></span></span>
<span><span><span><span><span><span><span>1000 мг =100г</span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span>3000 кг =30т</span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span>45 ц =450кг</span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span>5000м =500км</span></span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span><span>7 ц =70кг</span></span></span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span><span><span>4200 см =42м</span></span></span></span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span><span><span><span>800см =8м</span></span></span></span></span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span><span><span><span><span>60 т =600кг</span></span></span></span></span></span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span><span><span><span><span>31дм=310см</span></span></span></span></span></span></span></span></span></span></span></span></span></span>
<span>50 см =500мм</span>
<span><span>3000 кг =300ц</span></span>
<span><span><span>7000 мл=7л</span></span></span>