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.

\(456x45+456x10-456x50\)

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

\(=456x\left(55-50\right)\)

\(=456x5\)

\(=2280.\)

456 x 65 + 456 x 25 + 456 x 10

=456x(65+25+10)

=456x100

=45 600

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

= 54 cậu nhé

a,456*65+456*34+456

=456*65+456*34+456*1

=456*(65+34+1)

=456*100

=45600

a) = 456 x ( 65 + 34 + 1 )

     = 456 x 100

     = 45600

a ) 456 x 65 + 456 x 34 + 456

= 456 x 65 + 456 x 34 + 456 + 1

= 456 x ( 65 + 34 + 1 )

= 456 x      100

= 45600

b ) hong bít

Mik làm theo suy nghĩ nên k đúng hay sai cx đc nhen :))

gấp

456x45+456x10-456x50

=456x(45+10-50)

=456x5

=2280

2,22 x 35,6 + 2,22 x 2 x 5 + 54,4 x 2,22

= 2,22 ( 35,6 + 10 + 54,4 )

= 2,22 x 100

= 222

124x456x(810-405x2):1997

=124x456x(810-810):1997

=123x456x0:1997

=0

\(124.456.\left(810-405.2\right):1997=124.456.\left(810-810\right):1997=124.456.0:1997=0\) \(0\)

 hoang van binh       !hc tốt bn nhé ^_~!

124 x 456 x ( 810 - 405 x 2 ) : 1997

= 124 x 456 x ( 810 - 810 ) : 1997

= 124 x 456 x 0 : 1997

= 0

\(\Rightarrow\)kết qua = 0

giải giùm mình nhen mn. lu

\(a,\left(25\times32\right):8=25\times\left(32:8\right)=25\times4=100\\ b,\left(56\times125\right):7=\left(56:7\right)\times125=8\times125=1000\)

=100

=1000

a) 4 x 78 x 5

= (4 x 5) x 78

= 20 x 78

= 1560

b) 2 x 99 x 5

= (2 x 5) x 99

= 10 x 99

= 990

\(7,\)

\(a,=\left(4\times5\right)\times78=20\times78=1560\)

\(b,=\left(2\times5\right)\times99=10\times99=990\)

a. 4 x 78 x 5 = 4 x 5 x 78 = 20 x 78 = 1560

b. 2 x 99 x 5 = 2 x 5 x 99 = 10 x 99 = 990