The Kangaroo Mathematics Competition is an international contest involving 35 countries. It rewards exciting and stimulating math problems that entice participants to engage with mathematical topics. This book offers a selection of the most interesting problems from the last 10 years. The problems are organized thematically and are suitable for all types of schools. Whether used as a supplement to classroom teaching, during substitute lessons, or solved at home with the whole family, the problems are enjoyable for everyone and subtly convey the practical benefits of mathematics. This way, even the most dedicated math haters can be drawn out of their shells.