4. Вставь пропущенные числа. 7 + □ = 13; 18 − □ = 9; 8 + □ = 15; 12 − □ = 5; 16 − 7 = □; □ + 5 = 14; 8 + □ = 12; □□ − 7 = 5; 15 − □ = 9; □ + 7 = 14; □□ − 8 = 9; 12 − □ = 8; 9 + □ = 17; □□ − 6 = 8; 11 − □ = 7; □ + 4 = 13; 11 − □ = 2; 7 + □ = 15; □□ − 8 = 8; □ + 5 = 12; 13 − □ = 6; □ + 4 = 12; □□ − 9 = 9; 8 + □ = 11.

Question

Вопрос:

Accepted Answer

Заполняем пропуски обратными действиями:

7 + 6 = 13; 18 − 9 = 9; 8 + 7 = 15; 12 − 7 = 5.

16 − 7 = 9; 9 + 5 = 14; 8 + 4 = 12; 12 − 7 = 5.

15 − 6 = 9; 7 + 7 = 14; 17 − 8 = 9; 12 − 4 = 8.

9 + 8 = 17; 14 − 6 = 8; 11 − 4 = 7; 9 + 4 = 13.

11 − 9 = 2; 7 + 8 = 15; 16 − 8 = 8; 7 + 5 = 12.

13 − 7 = 6; 8 + 4 = 12; 18 − 9 = 9; 8 + 3 = 11.

Ответ: 6, 9, 7, 7, 9, 9, 4, 12, 6, 7, 17, 4, 8, 14, 4, 9, 9, 8, 16, 7, 7, 8, 18, 3.