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nagi17072002
2 năm trước
1.viết 5/6 và 5 thành hai phân số đều có mẫu số là 30.(nhớ ghi phép tính nhé mọi người rồi mới ghi kết quả) 2.tính nhanh(nhớ ghi phép tính rồi mới ghi kết quả nhé) a) 2x 6 x 13/5x13x6 b)8x11x13/11x13x16 c)5x18x12/15x24x6 3.cho các phân số:17/20 ; 23/30 ; 37/40 ; 53/60(nhớ ghi phép tính rồi mới ghi kết quả nhé mọi người) hãy viết các phân số đó thành các phân số có mẫu số là 120 giải nhanh cho mik nhé mai phải nộp cho cô rùi huhuhuhubu
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