Сторінки 41 - 60 » Стр.53-(3)

3. 70 – 23 = 70 – 20 – 3 = 50 – 3 = 47 50 – 18 = 50 – 10 – 8 = 40 – 8 = 32 80 – 56 = 80 – 50 – 6 = 30 – 6 = 24 40 – 16 = 40 – 10 – 6 = 30 – 6 = 24