9+8 16-7 36+23 15+45 17+50 69-40 87-43 70-9

1. Решим примеры:

$$9 + 8 = 17$$

$$16 - 7 = 9$$

$$36 + 23 = 59$$

$$15 + 45 = 60$$

$$17 + 50 = 67$$

$$69 - 40 = 29$$

$$87 - 43 = 44$$

$$70 - 9 = 61$$