Giải bài 2 trang 152 - SGK Toán lớp 5

Hướng dẫn:

$1 \, \text{tấn} = 1000kg \\ 1kg = 10hg = 100dag = 1000g$

$1km = 10hm = 100dam = 1000m \\ 1m = 10dm= 100cm = 1000mm$

Bài giải:

$a) \\ 1\text{m} = 10\text{dm} = 100 \text{cm} =1000\text{mm} \\ 1\text{km} = 1000\text{m} \\ 1\text{kg} = 1000\text{g} \\ 1\text{ tấn} = 1000\text{kg} \\$

$b) \\ 1\text{m} = \dfrac{1}{10} \text{dam} = 0,1 \text{dam} \\ 1\text{m} = \dfrac{1}{1000}\text{km} = 0,001\text{km} \\ 1\text{g} =\dfrac{1}{1000}\text{kg} = 0,001\text{kg} \\ 1\text{kg} =\dfrac{1}{1000}\text{tấn} = 0,001\text{tấn}$