☰ Mundarija · Matematika

Takrorlash: tenglamalar, teskari masalalar; qo‘shish va ayirish

Darslar 6–10 · 5 ta dars · I.V. Repyova, Y.V. Zemlina. Matematika 2-sinf, 1–4-qismlar. Novda Edutainment, 2023
Javoblar ota-onalar va o‘qituvchilar uchun.
1
Tenglamani yeching: x − 31 = 42.
2
Tenglamani yeching: 80 − y = 25.
3
46 + 22 = 68 ga teskari ikkita misol yozing.
4
Masala: Dalada 45 ta ko‘k va 33 ta sariq gul bor. Jami nechta gul?
5
Hisoblang: 5 dm 3 sm + 3 dm 4 sm (sm da).