Toán Lớp 4: 7,6-(-9,7)+7,6-(-1,3) tính nhanh
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Toán Lớp 4: 7,6-(-9,7)+7,6-(-1,3) tính nhanh
Comments ( 2 )
= (7,6+7,6) + (9,7 + 1,3)
= 15,2+11