4. Sınıf Matematik Doğal Sayılarla Toplama İşlemi, Tahmin Etme

https://youtu.be/0P9ydQKzoaY

https://youtu.be/e_t1zqh2qLo

https://youtu.be/uya0uIGpJO8

https://www.youtube.com/watch?v=2pvJ1W8CX5o

https://youtu.be/t_IaEJ2e8rE

https://www.youtube.com/watch?v=aa3xYTJ0lbY&list=PL3oxhzRdQr1kr6jcAWJcT8yQrum_wGYkw&index=9