Khổng Doãn An Phú
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2025-03-08 22:16:15
a)571+216+129+124=(571+129)+(216+124)=700+340=1040
b)27.74+26.27-355=27.(74+26)-355=27.100-355=2700-355=2345
c)100:{250:[40-(4.53-22.25)]}=100:250.20.[40-100.(5-1)]=8.(40-400)=8.(-360)=-2880
2025-03-08 22:01:07
a)320;4914;90
b)320;2315;90
c)4914;90;543
d)90
2025-03-06 22:40:42
\(\dfrac{-3}{8}\)=\(\text{}\text{}\text{}\dfrac{-\text{9}}{\text{2}\text{4}}\)
\(\dfrac{\text{5}}{-12}\)=\(\dfrac{-\text{5}}{\text{1}\text{2}}\)=\(\dfrac{-\text{1}\text{0}}{\text{2}\text{4}}\)
\(\text{}\text{}\text{}\dfrac{-\text{9}}{\text{2}\text{4}}\)>\(\dfrac{-\text{1}\text{0}}{\text{2}\text{4}}\)=>\(\dfrac{-3}{8}\)>\(\dfrac{\text{5}}{-12}\)
\(\dfrac{\text{3131 }}{5252}\) =\(\dfrac{31.1\text{0}1}{\text{52 }.1\text{0}\text{1}}\)=\(\dfrac{31}{\text{52 }}\)