\(50+50+50+50+50+50\)
\(=6\cdot50\)
\(=300\)
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\(50+50+50+50+50+50\)
\(=100+50+50+50+50\)
\(=150+50+50+50\)
\(=200+50+50\)
\(=250+50\)
\(=300\)
Hoặc :
\(=50\) x \(6\)
\(=300\)
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