直接写得数。（每小题 1 分, 共 12 分)
(1) $30+6=$
(2) $32-2=$
(3) $29-9=$
(4) $97-90=$
(5) $85-5=$
(6) $8+80=$
(9) $13-9+6=$
(7) $14-5=$
(10) $5+7-3=$
(8) $68-60=$
(11) $17-6-2=$
(12) $45-5+3=$
解
(1) 36
(2) 30
(3) 20
(4) 7
(5) 80
(6) 88
(7) 9
(8) 8
(9) 10
(10) 9
(11) 9
(12) 43