Question

tinh bang hai cach 

36*(7+3)              207*(2+6)

m.38*6+38*4=?

c138*6+38*4= 228 +152=380

c238*6+38*4=38*(6+4)

                       =38*10=380   

Answer 1

C1  \(36.\left(7+3\right)\)

\(=36.10\)

\(=360\)

C2 \(36.\left(7+3\right)\)

\(=36.7+36.3\)

\(=252+108\)

\(=360\)

câu sau tương tự

Answer 2

lam luon cau sau di bn

Answer 3

c1  \(207.\left(2+6\right)\)

\(=207.8\)

\(=1656\)

C2   \(207.\left(2+6\right)\)

\(=207.2+207.6\)

\(=414+1242\)

\(=1656\)