4 x 113 x 25 - 5 x 112 x 20
= 4 x 25 x 113 - 5 x 20 x 112
= 100 x 113 - 100 x 112
= 100 x (113 - 112)
= 100 x 1
= 100
4 x 113 x 25 - 5 x 112 x 20
= 4 x 25 x 113 - 5 x 20 x 112
= 100 x 113 - 100 x 112
= 100 x (113 - 112)
= 100 x 1
= 100
Cách 1: 4 x 113 x 25 - 5 x 112 x 20
= (25 x 4) x 113 - (5 x 20) x 112
= 100 x 113 - 100 x 112
= 11300 - 11200
= 100
Cách 2: 4 x 113 x 25 - 5 x 112 x 20
= (25 x 4) x 113 - (5 x 20) x 112
= 100 x (113 - 112)
= 100 x 1
= 100
4 x 113 x 25 - 5 x 112 x 20
= 113 x ( 4 x 25 ) - 112 x ( 5 x 20 )
= 113 x 100 - 112 x 100
= 100 x ( 113 - 112 )
= 100 x 1
= 100
4 x 113 x 25 - 5 x 112 x 20 =(4 x 25) x 113 - (5 x 20) x 112
= 100 x 113 - 100 x 112
=100 x (113 - 112)
=100
Chúc bạn học tốt !
Tính nhanh :
4 × 113 × 25 - 5 × 112 × 20
= ( 4 × 25 ) × 113 - ( 5 × 20 ) × 112
= 100 × 113 - 100 × 112
= 100 × ( 113 - 112 )
= 100 × 1
= 100
4 × 113 × 25 - 5 × 112 × 20
= ( 4 × 25 ) × 113 - ( 5 × 20 ) × 112
= 100 × 113 - 100 × 112
= 100 × ( 113 - 112 )
= 100 × 1
= 100
hok tốt
