So we want to know what the sum of 1015 + 119 is. The easiest way is to separate the two numbers into, ones, thens, hundreths and thousadns: 1015 = 1000 + 0 + 10 + 5 and 119 = 0 + 100 + 10 + 9. And now we add ones with ones, tens with tens, hundreths with hundreths and thousands with thousands: 1000 + 0 + 0 + 100 + 10 + 10 + 5 + 9=1000 + 100 + 20 + 14 = 1134 and the correct answer is B.