\(a.98+3+97+2\)
\(=\left(98+2\right)+\left(97+3\right)\)
\(=100+100\)
\(=200\)
\(56+399+1+4\)
\(=\left(56+4\right)+\left(399+1\right)\)
\(=60+400\)
\(=460\)
\(b.364+136+219+181\)
\(=\left(364+136\right)+\left(219+181\right)\)
\(=500+400\)
\(=900\)
\(178+277+123+422\)
\(=\left(178+422\right)+\left(277+123\right)\)
\(=600+400\)
\(=1000\)
\(HocTot!!!\)
\(@VR\)
a) 98+3+97+2
= (98+2)+(97+3)
= 100+100
= 200
56+399+1+4
= (56+4)+(399+1)
= 60+400
= 460
b) 364+136+219+181
= (364+136)+(219+181)
= 500+400
= 900
178+277+123+422
= (178+422)+(277+123)
= 600+400
= 1000
K nhé :)))
mik lm câu a thôi nhé
98+3+97+2
=(98+2)+(97+3)
=100+100
=200
56+399+1+4
=(399+1)+(56+4)
=400+60
=460
ht
a, 98 + 3 + 97 + 2 56 + 399 + 1+ 4
= ( 98 + 2 ) + ( 97 + 3 ) = ( 56 + 4 ) + ( 399 + 1 )
= 100 + 100 = 60 + 400
= 200 = 460
b, 364 + 136 + 219 + 181 178 + 277 + 123 + 422
= ( 364 + 136 ) + ( 219 + 181 ) = ( 178 + 422 ) + ( 123 + 277 )
= 500 + 400 = 600 + 400
= 900 = 1000
a) = (98+2) + (97+3)
= 100+ 100
=200
=(56+4) + (399+1)
=60+400
=460
b) =(364+136)+(219+181)
=500+400
=900
(178+422) +(277+123)
=600+500
=1100
=
