1. 12-4=8, 12-5=7, 12-6=6, 11-5=6, 12-7=5, 12-3=9, 11-7=4, 19-9=10, 7+6=13, 19-10=9

1. Вычислим примеры:

\( 12 - 4 = 8 \)

\( 12 - 5 = 7 \)

\( 12 - 6 = 6 \)

\( 11 - 5 = 6 \)

\( 12 - 7 = 5 \)

\( 12 - 3 = 9 \)

\( 11 - 7 = 4 \)

\( 19 - 9 = 10 \)

\( 7 + 6 = 13 \)

\( 19 - 10 = 9 \)