Xonadan o‘tib qo‘shish va ayirish (25 + 6, 33 − 7, 43 − 7)

Darslar 21–25 · 5 ta dars · I.V. Repyova, Y.V. Zemlina. Matematika 2-sinf, 1–4-qismlar. Novda Edutainment, 2023