41 x 36 + 59 x 90 + 41 x 84 + 59 x 30
= 41 x ( 36 + 84 ) + 59 x ( 30 + 90 )
= 41 x 120 + 59 x 120
= ( 41 + 59 ) x 120
= 100 x 120
= 12000
41 . 36 + 59 . 90 + 41 . 84 + 59 . 30
= 41 .( 36 + 84) + 59 . (90 + 120)
= 41 . 120 + 59 . 120
= 120 . ( 41 + 59)
= 120 . 100
= 12000
=41.(36+84)+59.(90+30)=41.120+59.120=120.(59+41)
\(\text{41.36+59.90+41.84+59.30}=12000\)
Cách 1 :
41.36 + 59.90 + 41.84 + 59.30
= 1470 + 5310 + 3444 + 1770
= 11994
Cách 2 :
41.36 + 59. 90 + 41.84 +59.30
= 41. ( 36 + 84 ) + 59. ( 90 + 30 )
= 41 . 120 + 59 . 120
= ( 41 + 59 ) . 120
= 100 .120
= 12000
bạn có thể làm 1 trong 2 cách !
Chúc bạn học tốt
Nếu là tính nhanh:
41.36 + 59.90 + 41.84 + 59.30
= 41.36 + 41.84 + 59.90 + 59.30
= 41.(36 + 84) + 59. (90+30)
= 41.120 + 59.120
= 120. (41 + 59)
= 120. 100
= 12000
=41.(36+84)+59.(90+30)
=41.100+59.120
=4100+7080
=11180
41 x 36 + 59 x 90 + 41 x 84 + 59 x 30
= 41 x ( 36 + 84 ) + 59 x ( 30 + 90 )
= 41 x 120 + 59 x 120
= ( 41 + 59 ) x 120
= 100 x 120
= 12000
41 x 36 + 59 x 90 + 41 x 84 + 59 x 30
= 41 x ( 36 + 84 ) + 59 x ( 30 + 90 )
= 41 x 120 + 59 x 120
= ( 41 + 59 ) x 120
= 100 x 120
= 12000
41 x 36 + 59 x 90 + 41 x 84 + 59 x 30
= 41 x ( 36 + 84 ) + 59 x ( 30 + 90 )
= 41 x 120 + 59 x 120
= ( 41 + 59 ) x 120
= 100 x 120
= 12000
41 x 36 + 59 x 90 + 41 x 84 + 59 x 30
= 41 x ( 36 + 84 ) + 59 x ( 30 + 90 )
= 41 x 120 + 59 x 120
= ( 41 + 59 ) x 120
= 100 x 120
= 12000