456 x 65 + 456 x 25 + 456 x 10

=456x(65+25+10)

=456x100

=45 600

    \(456+627+100+544+373\)

\(=\left(456+544\right)+\left(627+373\right)+100\)

\(=1000+1000+100\)

\(=2100\)

456+627+100+544+373
=(456+544)+(627+373)+100

=1000    +    1000  +  100

= 2100

kq 7754

456*4+456*3+4562

=456*(4+3)+4562

=456*7+4562

=3192+4562

=7754

`a)25xx532xx4`

`=(25xx4)xx432`

`=432xx100=43200`

`b)456xx200-456xx100`

`=456xx(200-100)`

`=456xx100=45600`

\(a,25\times432\times4=25\times4\times432=100\times432=4320\\ b,456\times200-456\times100=456\times\left(200-100\right)=456\times100=45600\)

456x45+456x10-456x50

=456x(45+10-50)

=456x5

=2280

\(456.45+456.10-456.50\)

\(=456\left(45+10-50\right)\)

\(=456.5=2280\)

P/s : Dấu chấm là dấu nhân nha.

715 + 456 + 544 + 285

= (715 + 285) + (456 + 544)

= 1000 + 1000

= 2000

35   x   45 6   x   5 = 6   x   6   x   9   x   5 6   x   5 = 6   x   9 = 54

= 54 cậu nhé

544 + 135 + 157 + 843 + 865 + 456 =   ( 544 + 456 ) + ( 135 + 865 ) + ( 157 + 834 ) =   1000 + 1000 + 1000   =   3000