Postupně vypočítej zadané příklady.

3 . 1 + 7 =	7 . 1 + 6 =	8 . 1 + 3 =	9 . 1 + 4 =
6 . 1 + 9 =	5 . 1 + 7 =	4 . 1 + 8 =	1 . 3 + 9 =
1 . 10 – 4 =	1 . 0 + 15 =	1 . 1 + 26 =	1 . 2 + 60 =
2 . 1 + 28 =	10 . 1 – 7 =	1 . 4 + 13 =	1 . 9 – 5 =
1 . 5 + 25 =	1 . 8 – 7 =	1 . 6 + 13 =	1 . 7 + 31 =
9 . 1 + = 80	7 . 1 + = 90	4 . 1 + = 60	5 . 1 + = 100