15 hm= \(\frac{15}{10}\)km 898dam= \(\frac{898}{100}\)km 442m= \(\frac{442}{1000}\)km 5676 m= \(\frac{5676}{100}\)
144hm= 14 400m 223dam= 2230m 345 m= 3450dm 23 455m= 2 345 500cm
150km 89 800km 442/1000km 5676/100hm
144 000m 2230m 3450dm 2 345 500cm
dễ mà không bt làm hả châu