Toán Lớp 5: hay viet phanso 4/5 thanh tong 2 phan so toi gian
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Toán Lớp 5: hay viet phanso 4/5 thanh tong 2 phan so toi gian
Comments ( 2 )
4/5=8/10=4/10+4/10=2/5+2/5
=> 4/5=2/5+2/5