Toán Tính nhanh 3/4+12/8+20/45+16/48+45/81+25/100 28/09/2021 By Iris Tính nhanh 3/4+12/8+20/45+16/48+45/81+25/100
3/4+12/8+20/45+16/48+45/81+25/100 =3/4 + 3/2 + 4/9 + 1/3 + 5/9 +1/4 = (3/4 + 1/4)+ (5/9+4/9)+(3/2 +1/3) = 1 + 1 + 11/6 = 2 + 11.6 Trả lời
3/4+12/8+20/45+16/48+45/81+25/100
=3/4 + 3/2 + 4/9 + 1/3 + 5/9 +1/4
= (3/4 + 1/4)+ (5/9+4/9)+(3/2 +1/3)
= 1 + 1 + 11/6
= 2 + 11.6
Đáp án:13/6
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