a,4823+1560+5177+8440
=(4823+5177)+(1560+8440)
=10000+10000
=20000
a) (4823+5177)+(1560+8440)
=10000+10000
=20000
b)(10556+9444)+(8074+926+1000)
=20000+10000
=30000
a) 4823 + 1560 + 5177 + 8440
= ( 4823 + 5177 ) + ( 1560 + 8440 )
= 10000 + 10000
= 20000
b) 10556 + 8074 + 9444 + 926 +1000
= ( 10556 + 9444 ) + ( 8074 + 926 ) + 1000
= 20000 + 9000 + 1000
= 20000 + 10000
= 30000
a. 4823 + 1560 + 5177 + 8440
= (4823 + 5177 ) + (1560 + 8440)
= 10000 + 10000
= 20000
a. (4823+5177)+(1560+8440)=10 000+10 000=20 000
b.(10556+9444)+(8074+926)+1000=2000+9000+1000=12000