237+2456+1763+544=5000

123,45+23,56+76,44+54,55=278

a, 237 + 2456 + 1763 + 544 = 5000

b, 123,45 + 23,56 + 76,44 + 54,55 = 278

   237 + 2 456 + 1 763 + 544

   = ( 237 + 1 763 ) + (  2 456 + 544 )

   = 2000 + 3000

   = 5000

   123,45 + 23,56 + 76,44 + 54,55

   = ( 123,45 + 54,55 ) + ( 23,56 + 76,44 )

   = 178 + 100 

   = 278

27 +132 + 237 + 868 + 763 = (237 + 763) + (132 + 868) + 27

= 1000 +1000 + 27 = 2027.

a. 237 + 357 + 763 = (237 + 763) + 357

= 1000 + 357

= 1357

a. 237 + 357 + 763 = (237 + 763) + 357

= 1000 + 357

= 1357

456 + 544 + 1000

= 1000 + 1000

= 2000

=2000 nha đúng cho mik xin tk về cho bố mẹ

2000

kb ko cần k!

đáp án là:2004456

2005 x 456 + 2004 x 544 = 2004456

Kết quả là : 2004456

a, 29 + (132+868)+(237+763)

= 29+1000+1000=2029

b,(652+148)+(327+73) + 15=1215

c,(146+54)+(121+379) = 200+500=700

d,(-452-548)+(395+605)=-1000+1000=0

a)29+132+237+868+763

=161+1105+763

=1266+763

=2029

b)652+327+148+15+73

=979+163+73

=1142+73

=1215

c)146+121+54+379

=267+433

=700

d)(-452)+395+(-548)+605

=(-57)+57

=0

29+132+237+868+763

=29+(132+868)+(237+763)

=29+1000+1000

=2900+1000

=3900

652+327+148+15+73

=(652+148)+(327+73)+15

=800+400+15

=1200+15

=1215

146+121+54+379

= (146+54)+(121+379)

= 200+500

=700

(-452)+395+(-548)+605

=[(-452)+(-548)]+395+605

=(-1000)+395+605

=[(-1000)+395)]+605

=(-605)+605

=0

456 + 872 + 544 + 128 =

2000

(456+544) + (872+128)

=1000+1000

=2000

k nha

456+872+544+128

=(456+544)+(872+128)

=1000+1000

=2000

a)2029

b)1215

c900

a,    29+132+237+868+763

     = 29+(132+868)+(237+763)

     = 29+1000+1000 =2029

b,    652+327+148+15+73

     = (652+148)+(327+73)+15

     = 800+400+15 =1215

c,    347+418+123+12

     = (347+123)+(418+12)

     = 470+430 =900