526 + 123 = N, N = 649, 3, 456 - 243 = N , N = 3,213, 6,450 + 238 = N , N = 6,688, 6,262 + 1,936 = N, N = 7,198, 1,455 + 4,835 = N, N = 6 ,290, 2,570 + 4,877= N, N = 7,447.

Adding 3-4 digit Numbers

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