Toán Lớp 4: Rút gọn các phân số sau thành phân số tối giản : 26/39;24/32; 1212/3939;506/418
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Toán Lớp 4: Rút gọn các phân số sau thành phân số tối giản : 26/39;24/32; 1212/3939;506/418
Comments ( 2 )
26/39 = (26:13)/(39:13) = 2/3
24/32 = (24:8)/(32:8) = 3/4
1212/3939 = (1212:303)/(3939:303) = 4/13
506/418 = (506:22)/(418:22) = 22/19
$\dfrac{26}{39}$ $\text{=}$ $\dfrac{26 : 13}{39 : 13}$ $\text{=}$ $\dfrac{2}{3}$
$\dfrac{24}{32}$ $\text{=}$ $\dfrac{24 : 8}{32 : 8}$ $\text{=}$ $\dfrac{3}{4}$
$\dfrac{1212}{3939}$ $\text{=}$ $\dfrac{1212 : 303}{3939 : 303}$ $\text{=}$ $\dfrac{4}{13}$
$\dfrac{506}{418}$ $\text{=}$ $\dfrac{506 : 22}{418 : 22}$ $\text{=}$ $\dfrac{23}{19}$
Chúc bạn học tốt!