4. Sınıf Matematik – 5, 25 ve 50 ile Kısayoldan Çarpma İşlemi

https://www.youtube.com/watch?v=0CTgxr4X-Ik

https://youtu.be/xqCCuUiOvS8

https://youtu.be/_4FWZ0YamxA

https://www.youtube.com/watch?v=0Wyvs2K4Ya0&list=UUoWV0DS2JAYrM3wov5BvcvA&index=18

https://youtu.be/EClPRAjd7jE

https://youtu.be/QHaGo61P2CQ