Yeah. Just remember that each multiple of 2^10 is approximately 10^3 (1000) and then memorize the single-digit powers of 2: 1, 2, 4, 8, 16, 32, 64, 128, 256, 5

Yeah. Just remember that each multiple of 2^10 is approximately 10^3 (1000) and then memorize the single-digit powers of 2: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512. It's useful for doing order of magnitude estimates of multiplications in your head.