Ответ:
1 + 4 = 5; 2 + 4 = 6; 3 + 4 = 7; 4 + 4 = 8; 5 + 4 = 9; 6 + 4 = 10; 7 + 4 = 11; 8 + 4 = 12; 9 + 4 = 13; 10 + 4 = 14.
5 − 4 = 1; 6 − 4 = 2; 7 − 4 = 3; 8 − 4 = 4; 9 − 4 = 5; 10 − 4 = 6; 11 − 4 = 7; 12 − 4 = 8; 13 − 4 = 9; 14 − 4 = 10.
1 + 4 = 5; 2 + 4 = 6; 3 + 4 = 7; 4 + 4 = 8; 5 + 4 = 9; 6 + 4 = 10; 7 + 4 = 11; 8 + 4 = 12; 9 + 4 = 13; 10 + 4 = 14.
5 − 4 = 1; 6 − 4 = 2; 7 − 4 = 3; 8 − 4 = 4; 9 − 4 = 5; 10 − 4 = 6; 11 − 4 = 7; 12 − 4 = 8; 13 − 4 = 9; 14 − 4 = 10.