TL:
435 x 85 + 435 x 45 - 435 x 31 + 435
= 435 x 85 + 435 x 45 - 435 x 31 + 435 x 1
= 435 x (85 + 45 - 31 + 1)
= 435 x 100
= 43500
HT
Nhớ t i c k
435 x 85 + 435 x 45 - 435 x 31 + 435
435 x 85 + 435 x 45 - 435 x 31 + 435 x 1
= 435 x ( 85 + 45 - 31 + 1 )
= 435 x 100
= 43500
435 x 85 + 435 x 45 - 435 x 31 + 435 =
435x(85+45-31+1)=435x100
=43500
435 x 85 + 435 x 45 - 435 x 31 + 435
435 x 85 + 435 x 45 - 435 x 31 + 435 x 1
= 435 x ( 85 + 31 - 31 + 1 )
= 435 x 100
= 43500
HT
435x(85+45-31)
= 435x 99
= 43065
435 x 85 + 435 x 45 - 435 x 31 + 435
= 435 x (85 + 45) - 435 x (31 + 1)
= 435 x 130 - 435 x 32
= 435 x (130 - 32)
= 435 x 98
= 42630
435 x 85 + 435 x 45 - 435 x 31 + 435
= 435 x 85 + 435 x 45 - 435 x 31 + 435 x 1
= 435 x ( 85 + 45 - 31 + 1 )
= 435 x 100
= 43500
435 x 85 + 435 x45 x 31 + 435
=435 x ( 85 + 45 -31 + 1)=435 x 10
=43500
435 x 85 + 435 x 45 - 435 x 31 + 435
435 x 85 + 435 x 45 - 435 x 31 + 435 x 1
= 435 x ( 85 + 45 - 31 + 1 )
= 435 x 100
= 43500
Trả lời :
435 x 85 + 435 x 45 - 435 x 31 + 435
435 x 85 + 435 x 45 - 435 x 31 + 435 x 1
= 435 x ( 85 + 45 - 31 + 1 )
= 435 x 100
= 43500
#hoctot