Сторінки 41 - 60 » Стр.45 (9)

9. 26 + 61 = 20 + 60 + 6 + 1 = 80 + 7 = 87 57 + 22 = 50 + 20 + 7 + 2 = 70 + 9 = 79 75 – 13 = 70 – 10 + 5 – 3 = 60 + 2 = 62 42 + 48 = 40 + 40 + 2 + 8 = 80 + 10 = 90