27 x 113 - 27 x 13 + 100
= 27 x ( 113 - 13 ) + 100
= 27 x 100 + 100
= 2700 + 100
= 2800
Tính nhanh :
27 × 113 - 27 × 13 + 100
= 27 × ( 113 - 13 ) + 100
= 27 × 100 + 100
= 27 × 100 + 100 × 1
= ( 27 + 1 ) × 100
= 28 × 100
= 2 800
27 x 113 - 27 x 13 + 100
= 27 x ( 113 - 13 ) + 100
= 27 x 100 + 100
= 100 x ( 27 + 1 )
= 100 x 28
= 28000
Học tốt nhé~
27 x 113 - 27 x 13 + 100
= 27(113 - 13) + 100 x 1
= 27 x 100 + 100 x 1
= 28 x 100
= 2800
27x 113 - 27 x 13 + 100 = 27x(113-13) + 100 = 27x 100 +100 = 100 x (27+1) = 100x28= 2800