a, 132 x 99 + 132 

= 132 x 99 + 132 x 1

= 132 x ( 99 + 1 )

= 132 x 100 = 13200

b, ( 56 x 27 + 56 x 35 ) : 62 

= 56 x ( 27 + 35 ) : 62

= 56 x 62 : 62

= 62 : 62 x 56

= 1 x 56 = 56

c, 2015 x ( 67 + 53 ) - 2005 x ( 53 + 67 )

= 2005 + 10 x 120 - 2005 x 120

= 2005 x 120 - 2005 x 120 + 10

= 2005 x ( 120 - 120 ) + 10

= 2005 x 0 + 10

= 0 + 10 = 10

d, 2009 x 2009 - 2010 x 2008 

= 2009 x 2009 - 2009 x 2009

= 2009 x ( 2009 - 2009 )

= 2009 x 0

= 0

e, 4357 x 267 x ( 630 - 315 x 2 )

= 4357 x 267 x ( 630 - 630 )

= 4357 x 267 x 0

= 4357 x 0

= 0

a. 132 x 99 + 132 

= 132 x (99 + 1) 

= 132 x 100

= 13200

b. (56 x 27 + 56 x 35) : 62

= 56 x (27 + 35) : 62

= 56 x 62 : 62

= 56

c. 2015 x (67 + 53) - 2005 x (53 + 67)

= (2015 - 2005) x (67 + 53)

= 2010 x 120

= 241200

a: \(=167\cdot\dfrac{67}{1000}+167\cdot\dfrac{33}{1000}=167\cdot\dfrac{1}{10}=\dfrac{167}{10}\)

Cảm ơn nha!!

\(=\left(-67\right).\left(-33\right)-67.77+\left(-67\right).33-77.33\)

\(=\left[\left(-67\right).\left(-33\right)+\left(-67\right).33\right]-66.77-77.33\)

\(=-77\left(66+33\right)=-77.99=-7623\)

32 + 33 + 32 + 33 + 32 + 33 + 332 + 333 + 332+ 333 + 3332 + 3333 = 8190

8189 kb với mk nha

a)  \(12.53+53.172-53.84=53.\left(12+172-84\right)=53.100=5300\)

b)  \(33.77+66.77+77=77.\left(33+66+1\right)=77.100=7700\)

c)   \(79.35+79.77+21.83+21.29=79.\left(35+77\right)+21.\left(83+29\right)\)

\(=79.112+21.112=112\left(79+21\right)=112.100=11200\)

53.(12+172-84)

=53.100=5300 tương tự còn lại tự làm

\(\left(100+67\right).67+\left(200-33\right).33\)

\(=167.67+167.33\)

\(=167.\left(67+33\right)=167.100=16700\)

ĐỀ BẠN TỰ GHI À NHA

=167x67+167x33

=167x(67+33)

=167x100

=16700