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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 954 · 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 7 o'clock (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 70° and 45°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  11. 11.An angle measures 105°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  12. 12.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 35° and 20°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 110° and 130°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 95° and 30°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 40° and 90°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 100° and 25°. What is the third angle (in degrees)?
  24. 24.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  25. 25.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  27. 27.An angle measures 65°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  28. 28.Three angles meet at a point. Two of them are 110° and 90°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 90° and 140°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  39. 39.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  40. 40.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right

Answer key

  1. 150
  2. 20
  3. 75
  4. 60
  5. 35
  6. 110
  7. 65
  8. 30
  9. 40
  10. 70
  11. Obtuse
  12. 55
  13. 125
  14. 30
  15. 90
  16. 90
  17. 90
  18. 25
  19. 120
  20. 55
  21. 50
  22. 170
  23. 55
  24. Straight
  25. 150
  26. 130
  27. Acute
  28. 160
  29. 55
  30. 30
  31. 130
  32. 25
  33. 145
  34. 60
  35. 210
  36. 5
  37. 125
  38. 75
  39. Right
  40. Obtuse

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