Question

Tính nhanh
 a. 0,9 x 95 + 0,9 x 4 + 0,9

b. 2,35 x 14,5 + 2,35 x 84,5 + 2,35

Answer 1

a: =0,9x100=90

b: =2,35x100=235

Answer 2

\(a,0,9\times95+0,9\times4+0,9=0,9\times\left(95+4+1\right)=0,9\times100=90\\ b,2,35\times14,5+2,35\times84,5+2,35=2,35\times\left(14,5+84,5+1\right)=2,35\times100=235\)

Answer 3

a,0,9×95+0,9×4+0,9=0,9×(95+4+1)=0,9×100=90b,2,35×14,5+2,35×84,5+2,35=2,35×(14,5+84,5+1)=2,35×100=235