Сторінки 41 - 60 » Стр.49-(1)

20 – 6 = 10 + 10 – 6 = 10 + 4 = 14 40 – 6 = 30 + 10 – 6 = 30 + 4 = 34 70 – 6 = 60 + 10 – 6 = 60 + 4 = 64 60 – 7 = 50 + 10 – 7 = 50 + 3 = 53 50 – 7 = 40 + 10 – 7 = 40 + 3 = 43