How to say purchasing in English It's words, not sentences~

In addition, we are willing to act as your purchasing agent in the United States on the condition of commission

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1. 0.125 + 3.7 × 1 / 8 + 1 / 8 × 5.3=
2. Seven and a half divided by a quarter emergency
3. An old man said, "add 12 to my age, divide by 4, subtract 15, and multiply by 10. It's exactly 100 years old." do you know how old the old man is now? How do you figure it out?
4. (36 / 11 * 25.8-36 / 11 * 16076 + 18 / 55 * 19.6) * (1.25-7 / 12 + 5 / 36) Should be: （36/11*25.8-36/11*16.76+18/55*19.6)*(1.25-7/12+5/36）
5. 1. In the trapezoid ABCD, AD / / BC, ab = ad = DC = 2cm, angle c = 45 ° to find the perimeter of the trapezoid
6. In the right angle trapezoid ABCD, BC ‖ ad, ab ⊥ ad, ∠ d = 45 °, the vertical bisector EF of oblique waist CD intersects ad at g, and the extension line of intersection Ba intersects F Practice question 17 on page 46 in eighth grade (next) class
7. As shown in the figure, it is known that in the rectangular trapezoid ABCD, BC ‖ ad, ab ⊥ ad, bottom ad = 6, the vertical bisector EF of oblique waist CD intersects ad at g, the extension line of intersection Ba intersects F, and ∠ d = 45 ° to find the length of BF
8. In right angle trapezoid ABCD, BC ∥ ad ad ⊥ ad bottom ad = a oblique waist CD, the vertical EF intersects ad at g intersects Ba, and the extension line calculates BF length at f angle d = 45 °
9. It is known that in the isosceles trapezoid ABCD, ab = CD, ad is parallel to BC, point E is a point outside the trapezoid, and EA = ed Draw your own picture. Oh, Sheila!
10. In trapezoidal ABCD, AD / / BC, angle bad = 90 °, angle d = 45 °, EF is the middle perpendicular of CD, the perpendicular foot is e, Fe intersects ad at m, if ad = a, calculate BF value
11. What is the tenth item if all are divided by 9 and the rest are arranged from small to large? The sooner the better!
12. What's ten and a third Be in a hurry
13. 999.99 (of 100 9) * 999.99 (of 100 9) + 99.99 (of 100 9) 999.99 (100 9 in total) * 999.99 (100 9 in total) + 199.99 (100 9 in total) How many zeros in all? Note: the last one is 1999... 9 (100 9S)
14. 1+2-3-4+5+6-7-8…… -1983-1984+1985+1986=? This question 1 + 2-3-4 + 5 + 6-7-8 -The calculation process and results of 1983-1984 + 1985 + 1986 are given by the disjunction formula
15. It is known that the coordinates of the four vertices of the quadrilateral ABCD are a (1.2), B (4.3), C (3.6), D (0.5). Judge whether the quadrilateral ABCD is a square and explain the reason
16. As shown in the figure, quadrilateral ABCD and quadrilateral aefc are two rectangles, and point B is on the edge of EF. If the area of rectangle ABCD and rectangle aefc is S1 and S2 respectively, what is the size relationship?
17. The vertex coordinates of the quadrilateral are a (- 1,4) B (2,2) C (4, - 1) d (- 2, - 2) respectively to find the area of the quadrilateral ABCD
18. The coordinates of each vertex of the quadrilateral ABCD are a (0.0), B (3.5), C (12.8) and D (15.0). Find the area of the quadrilateral
19. Given that point a (1,2) and point B (5,6) are of length 1, the segment CD moves on the x-axis. When the perimeter of quadrilateral ABCD is the smallest, the coordinate of point D is ()
20. There are two points a (1,7) and B (3,4) in the plane rectangular coordinate system. How to find a point C and D on the x-axis and y-axis to minimize the perimeter of the quadrilateral ABCD?