You can do it yourself first. These test sites are: negative sign, fractional square, approximate score, distribution rate, combination rate, common factor extraction, and some special numbers. No, we will see the answer.

This is the algorithm and the answer. Use your own brain in this process:

(1) directly,-18; (2) Use additive exchange rate and combined exchange rate,-1/5; (3) Using cumulative exchange rate and combined exchange rate, 0; (4) Direct calculation,-23; (5) Step by step, 45/8; (6) Add a little to the exchange rate and the combined exchange rate, and then divide by 3 and115; (7) Disassemble 10 to multiply and divide, respectively,-4; (8) The sum of squares minus points is-45 respectively; (9)-32; Multiply the number of (10) components, 81/28; ( 1 1)3 1 2/5; (12) extracting common factor,-120; ( 13)- 1/ 12; ( 14)

-1 and1/6; (15) About points, 9; ( 16)9/ 16; (17) Extract common factor, 0