Question

a) 162+275+173+227+725+438

Answer 1

`a) 162+275+173+227+725+438`

`=(162+438)+(275+725)+(173+227)`

`=600+1000+400`

`=(600+400)+1000`

`=1000+1000=2000`

Answer 2

\(a) 162 + 275 + 173 + 227 + 725 + 438 = ( 162 + 438 ) + ( 275 + 725 ) + ( 173 + 227 ) = 600 + 1000 + 400\)

\(\text{= ( 600 + 400 ) + 1000 = 1000 + 1000 = 2000}\)

Answer 3

162+275+173+227+725+438

= (162+438)+(275+725)+(173+227)

= 600+1000+400

= 1000 + 1000

= 2000