用笔算464开方的步骤

464 / 4 = 116116 / 4 = 29464 = 4 * 4 * 295 * 5 = 256 * 6 = 365.5 * 5.5 = 30.255.4 * 5.4 = 29.165.3 * 5.3 = 28.095.35 *5.35 = 28.62255.375 * 5.375 = 28.8906255.38 * 5.38 = 28.94445.39 * 5.39 = 29.0521464开方大约 = 4 * 5.38 = 21.52