Математика. 15 урок. Сложение и вычитание однозначных чисел с переходом через разряд.

Ponchik the Hamster is confused by his nuts when he has more than ten—can you help him figure it out? In this lesson, we'll explore a simple technique for adding and subtracting single-digit numbers by tens: breaking the number down into "up to ten" and "remainder." We'll also learn how to check ourselves by doing the reverse operation to avoid making mistakes. This lesson is suitable for second-grade students and anyone who wants to count to 20 quickly and confidently! 📄 Text version of the lesson → https://nachalka.kz/video-urok/slozhe... 📌 Subscribe to the channel so you don't miss new math lessons every week! #math #2nd grade #goingoverten #mentalcalculus #school #learneasy