Вычисли рационально 5 + 39 + 95 . 6 + 98 + 94. 205 + 199 + 295. 10 6 + 198 + 594. 105 + 599 + 195. 306 + 298 + 294

5 + 39 + 95 = ( 5 + 95 ) + 39 = 100 + 39 = 139

6 + 98 + 64 = ( 6 + 94 ) + 98 = 100 + 98 = 198

205 + 199 + 295 = ( 205 + 295 ) + 199 = ( 200 + 5 + 200 + 95 ) + 199 =

=( 400 + 100 ) + 199 =  500 + 199 = 699

106 + 198 + 594 = ( 106 + 594 ) + 198 = ( 100 + 6 + 594 ) + 198 =

= ( 100 + 600 ) + 198 = 700 + 198 = 898

105 + 599 + 195 = ( 105 + 195 ) + 599 = ( 100 + 5 + 195 ) + 599 =

= ( 100 + 200 ) + 599 = 300 + 599 = 899

306 + 298 + 294 = ( 306 + 294 ) + 298 = ( 300 + 6 + 294 ) + 298 =

= ( 300 + 300 ) + 298 = 600 + 298 = 898