Question

1.Tính nhanh

A,7256×4375-725/3650+4375×7255

Answer 1

\(\dfrac{7256.4375-725}{3650+4375.7255}\)

\(=\dfrac{\left(7255+1\right).4375-725}{3650+4375.7255}\)

\(=\dfrac{7255.4375+1.4375-725}{3650+4375.7255}\)

\(=\dfrac{7255.4375+3650}{3650+4375.7255}=1\)

Answer 2

\(\dfrac{7256.4375-725}{3650+4375.7255}=\dfrac{\left(7255+1\right).4375-725}{3650+4375.7255}\)

\(=\dfrac{7255.4375+4375-725}{3650+4372.7255}=\dfrac{7255.4375+3650}{3650+4375.7255}=1\)