Printer-Friendly Version § 4-221. Rounding to the nearest whole dollar. Final child support should be rounded to the nearest dollar in all instances.§ 4-221 adopted July 13, 2011, effective September 1, 2011. Book traversal links for § 4-221. Rounding to the nearest whole dollar. ‹ § 4-220. Limitation on decrease. Up § 4-222. Residence with third party. ›