Question

Tính nhanh :

-32x(-101)

102x(-74)

-49x99

45-5x(9+13)

 

Answer 1

3232

-7548

-4851

-65

Tích cho mk nha

Answer 2

a, -32 . (-101) = 32 . 101 = 32 . (100+1) = 32 . 100 + 32 = 3232

b,102 . (-74)= -74 . (100+2)= -7400 - 148 = -7548

c,-49 . 99 = -49 .( 100 - 1 ) = -4900 + 49 = -4851 

d, 45 - 5.( 9+13 ) = 45 - 5.22= 45 - 110 = -65