口算。9+2=9+3=9+4=9+5=9+6=9+7=

口算。1|-r+~(]5S7f(Q8r

9+2=8L5{4u.s;W;q){(`:@;d7m/s    9+3=5_4Q+y6J,W2y8Y(c8V8J:d8]8u/R    9+4=7C/`0P8U'E6d6[;t:_(Q   9+5=5])k)I:R'm:a4|1|-r+~(]5S7f(Q8r

9+6='A9W*f1]    9+7=(?2o8v6q)b6K6f:`    9+8=)k1f;e4p;C6D4}(?6t1|-r+~(]5S7f(Q8r