206
1/194
231 + 194 = 425
194 + 44 = 238
1037 + 206 + 1804 = 3047
409 + 206 = 615
294. To do this quickly, the "trick" is to recognise that 12 + 88 = 100 Then using the laws of commutativity and associativity, 12 + 194 + 88 = 194 + 12 + 88 = 194 + (12 + 88) = 194 + 100 = 294
194
206
The sum is 194
1,067
206