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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 277 · 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.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  4. 4.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 45° and 55°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  9. 9.Two angles of a triangle are 55° and 65°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 50° and 240°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  12. 12.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  13. 13.Two angles of a triangle are 30° and 125°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 60° and 70°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 70° and 140°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 95° and 65°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  25. 25.Two angles of a triangle are 35° and 70°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 65° and 25°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  34. 34.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  35. 35.An angle measures 145°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  36. 36.An angle measures 30°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  37. 37.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  39. 39.An angle measures 40°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  40. 40.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?

Answer key

  1. 10
  2. 180
  3. Right
  4. 40
  5. 80
  6. 35
  7. 90
  8. 150
  9. 60
  10. 70
  11. 30
  12. Straight
  13. 25
  14. 120
  15. 35
  16. 230
  17. 115
  18. 15
  19. 150
  20. 150
  21. 20
  22. 160
  23. 80
  24. 120
  25. 75
  26. 45
  27. 130
  28. 120
  29. 90
  30. 60
  31. 80
  32. 150
  33. 60
  34. Obtuse
  35. Obtuse
  36. Acute
  37. 125
  38. 90
  39. Acute
  40. 40

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