Toán 125m = dam. 8kg = tạ. 25km8m = m. 48dm2 = m2 28/11/2021 By aihong 125m = dam. 8kg = tạ. 25km8m = m. 48dm2 = m2
$\text{Ta có:}$ $1m=\dfrac{1}{10}dam=0,1dam$ $\text{$1kg=\dfrac{1}{100}$ tạ $=0,01$ tạ}$ $1km=1000m$ $1dm^2=\dfrac{1}{100}m^2=0,01m^2$ $\text{Áp dụng:}$ $125m= \dfrac{125}{10}dam=\dfrac{25}{2}dam=12,5dam$ $\text{$8kg=\dfrac{8}{100}$ tạ $=\dfrac{2}{25}$ tạ $=0,08$ tạ}$ $25km8m=25008m$ $48dm^2=\dfrac{48}{100}m^2=\dfrac{12}{25}m^2=0,48m^2$ Trả lời
125m =12,5 dam.
8kg = 0,08 tạ
25km8m =25008 m
48dm2 =0,48 m2
$\text{Ta có:}$
$1m=\dfrac{1}{10}dam=0,1dam$
$\text{$1kg=\dfrac{1}{100}$ tạ $=0,01$ tạ}$
$1km=1000m$
$1dm^2=\dfrac{1}{100}m^2=0,01m^2$
$\text{Áp dụng:}$
$125m= \dfrac{125}{10}dam=\dfrac{25}{2}dam=12,5dam$
$\text{$8kg=\dfrac{8}{100}$ tạ $=\dfrac{2}{25}$ tạ $=0,08$ tạ}$
$25km8m=25008m$
$48dm^2=\dfrac{48}{100}m^2=\dfrac{12}{25}m^2=0,48m^2$