4. Sınıf Matematik Doğal Sayılarla Toplama İşlemi, Tahmin Etme

https://youtu.be/jaWei0PiLgM

https://youtu.be/41Hf9z0BOHY

https://www.youtube.com/watch?v=4CPV_6V9Zq8&list=PL3oxhzRdQr1kr6jcAWJcT8yQrum_wGYkw&index=14

https://youtu.be/Pxf4Y7Ny3Fs

https://youtu.be/6TB4Q-SWvF8

https://youtu.be/WaTIm7oEYzw