Toán Lớp 5: tính nhanh
39/16 : 5/8-7/16 : 5/8 + 4/5
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Toán Lớp 5: tính nhanh
39/16 : 5/8-7/16 : 5/8 + 4/5
Comments ( 2 )
=39/16 xx 8/5-7/16 xx8/5+4/5
=8/5xx(39/16-7/16)+4/5
=8/5xx 32/16+4/5
=8/5xx2+4/5
=16/5+4/5
=20/5
=4