This document contains a series of math word problems involving percentages, fractions, equations, angles, and linear equations. The problems cover calculating percentages of numbers, solving single-variable and multi-step equations, finding missing angles and side lengths of triangles, and determining the intersection point of two linear equations.

1. KOPFRECHNENKOPFRECHNEN
KOPFGEOMETRIEKOPFGEOMETRIE

2. 3% von 800 =3% von 800 =

3. 5% von 900 =5% von 900 =

4. 13% von 600 =13% von 600 =

5. 14% von 500 + 18 =14% von 500 + 18 =

6. 14% von (500 + 100) =14% von (500 + 100) =

7. 13% von (500 + 100) =13% von (500 + 100) =

8. 13% von (500 - 100) =13% von (500 - 100) =

9. 13% von (500 - 200) =13% von (500 - 200) =

10. 13% von (500 - 200) + 8 =13% von (500 - 200) + 8 =

11. 13% von (500 - 200) - 11 =13% von (500 - 200) - 11 =

12. 3% von (500 - 100) * 2 =3% von (500 - 100) * 2 =

13. 3% von (500 - 100) +3% von (500 - 100) +
2% von 700 =2% von 700 =

14. 3% von (500 - 100) +3% von (500 - 100) +
2% von (700+ 200) =2% von (700+ 200) =

15. 3%3% vonvon (500-100)+x = 35(500-100)+x = 35

16. 3%3% von (500 +300)von (500 +300) + x = 35+ x = 35

17. 3%von(500+300)+2x=363%von(500+300)+2x=36

18. 12² + x = 160

19. 12² + 2x = 160

20. 3x + √225 = 21

21. 4x + √169 = 53

22. (3+x)² = 49

23. 2x + 3 = 252x + 3 = 25

24. 3x + 13 = 343x + 13 = 34

25. 5 * (x+3)=455 * (x+3)=45

26. 7 * (x+3)=637 * (x+3)=63

27. 7 * (x-3)=427 * (x-3)=42

28. 7 * (x-3) + 5=407 * (x-3) + 5=40

29. 8 * (x-3) + 5=298 * (x-3) + 5=29

30. 6 * (x-3) + 3=396 * (x-3) + 3=39

31. 6 x+ 2 = 3x + 176 x+ 2 = 3x + 17

32. 6 x+ 2 = 4x + 166 x+ 2 = 4x + 16

33. 8 x+ 2 = 4x + 268 x+ 2 = 4x + 26

34. 8 x-2 = 4x + 268 x-2 = 4x + 26

35. 11x-2 = 4x + 2611x-2 = 4x + 26

36. 11x-2 = 4x + 3311x-2 = 4x + 33

37. 11x-2 = 4x – 3711x-2 = 4x – 37

38. 66° 66°
γ
2 * γ + 38 =

39. 2*c + x = 35
• 6 c
• 8

40. 2*a + x = 21
• a 5
• 4

52. • y = 5x – 1
• y = 2x + 8
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