5000 + 5000 = 10000 6000 + 1000 = 70004000 + 4000 = 8000 2000 + 8000 = 10000B

Câu 1.5000 + 5000 = 10000 6000 + 1000 = 70004000 + 4000 = 8000 2000 + 8000 = 10000b. 2000 + 700 = 2700 8000 + 500 = 8500100 + 1000 = 1100 5000 + 300 = 53006000 + 600 = 6600 400 + 6000 = 6400