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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 800 · 40 sums
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The method (Know the totals): Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°. On a straight line: the two angles add up to 180°. In a triangle: the three angles add up to 180°. Around a point: 360°. Clock: each hour mark is 30° apart (360° ÷ 12).

NameDateTime takenScore ___ / 40
  1. 1.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  2. 2.An angle measures 140°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  3. 3.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  4. 4.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 80° and 60°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 50° and 140°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  11. 11.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  12. 12.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  13. 13.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 70° and 55°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 90° and 70°. What is the third angle (in degrees)?
  26. 26.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  27. 27.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 50° and 30°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 140° and 100°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 130° and 130°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?

Answer key

  1. 90
  2. Obtuse
  3. Straight
  4. 60
  5. 165
  6. 220
  7. 85
  8. 170
  9. 60
  10. 25
  11. Right
  12. Acute
  13. 150
  14. 20
  15. 160
  16. 190
  17. 170
  18. 30
  19. 80
  20. 70
  21. 55
  22. 230
  23. 65
  24. 5
  25. 200
  26. Acute
  27. 45
  28. 50
  29. 80
  30. 30
  31. 100
  32. 15
  33. 140
  34. 160
  35. 125
  36. 120
  37. 100
  38. 20
  39. 10
  40. 155

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