The following websites provide detailed solutions in Ukrainian, organized by exercise numbers (typically covering exercises 1 through 1114):
: Includes both the 2004 and 2015 editions, which is helpful if you are using an older textbook.
ГДЗ Математика 4 клас М.В. Богданович, Г.П. Лишенко 2015
: Features the 2015 edition with an interactive list of exercise numbers for quick navigation.