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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 686 · 40 sums
TalentJR

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 40°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 80° and 210°. What is the third angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  4. 4.Three angles meet at a point. Two of them are 130° and 150°. What is the third angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 35° and 135°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 45°. What is the other angle (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.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 140° and 60°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  18. 18.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  19. 19.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  21. 21.Two angles of a triangle are 85° and 65°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 85° and 80°. What is the third angle (in degrees)?
  23. 23.An angle measures 50°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  24. 24.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 60° and 180°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 30° and 125°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  30. 30.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  31. 31.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 120° and 140°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 35° and 55°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 35° and 70°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  36. 36.An angle measures 65°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  37. 37.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  38. 38.An angle measures 135°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  39. 39.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?

Answer key

  1. 140
  2. 70
  3. Right
  4. 80
  5. 70
  6. 150
  7. 10
  8. 120
  9. 45
  10. 25
  11. 190
  12. 180
  13. 30
  14. 55
  15. 45
  16. 160
  17. 145
  18. Straight
  19. 65
  20. 90
  21. 30
  22. 15
  23. Acute
  24. 85
  25. 150
  26. 100
  27. 120
  28. 25
  29. 180
  30. Acute
  31. 150
  32. 100
  33. 90
  34. 75
  35. 30
  36. Acute
  37. 50
  38. Obtuse
  39. 60
  40. 90

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