Here are five scores: 23, 58, 152, 310, 171, 219______ ．

Here are five scores: 23, 58, 152, 310, 171, 219______ ．

23-12 = 16, 58-12 = 181523-12 = 7461017-12 = 3341219-12 = 538334 < 18 < 538 < 746 < 16, so: 1017 < 58 < 1219 < 1523 < 23; the middle number is 1219

36 * (29 and 17 / 18)
Simple calculation

=36×29+36×17/18
=1044+34
=1078
Distribution law by multiplication

36 * (- 29 and 17 / 18) clever calculation
The faster the better, the process, the answer is anxious

=-36 * 29 and 17 / 18
=-36 * (1 / 30-18)
=-36 * 30 + 1 / 18 of 36 * 18
=-1080+2
=-1078

17 times 36

612