Question

Tính nhanh

1 )152 x 9 + 152

2) 24 x  999 + 24

Answer 1

1)   \(152\times9+152\times1=152\times\left(9+1\right)=152\times10=1520\)

2)    \(24\times999+24\times1=24\times\left(999+1\right)=24\times1000=24000\)

Answer 2

1/ 152 x 9 + 152 x 1 = 152 x ( 9 + 1 ) = 152 x 10 = 1520

2/ 24 x 999 + 24 x 1 = 24 x ( 999 + 1 ) = 24 x 1000 = 24000