Question

[đặng thị phương2007]

tính nhanh 

2,5 :0,5 +2,5 :0,25+2,5:0,125+2,5*6

Answer 1

[『ღƤℓαէїŋʉɱ ₣їɾεツ』]

\(2,5:0,5+2,5:0,25+2,5:0,125+2,5\times6\)

\(=2,5\times2+2,5\times4+2,5\times8+2,5\times6\)

\(=2,5\times\left(2+4+8+6\right)\)

\(=2,5\times20\)

\(=50\)