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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 632 · 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.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  3. 3.Two angles of a triangle are 45° and 110°. What is the third angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 45° and 60°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  9. 9.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  10. 10.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  11. 11.Two angles of a triangle are 95° and 25°. What is the third angle (in degrees)?
  12. 12.Two angles of a triangle are 30° and 65°. What is the third angle (in degrees)?
  13. 13.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  14. 14.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  15. 15.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 30° and 80°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 35° and 45°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 75° and 30°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 140° and 120°. What is the third angle (in degrees)?
  26. 26.An angle measures 60°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  27. 27.Two angles of a triangle are 75° and 45°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  38. 38.Two angles of a triangle are 80° and 20°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 55° and 85°. What is the third 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. 60
  3. 25
  4. 70
  5. 75
  6. 15
  7. 180
  8. 150
  9. Right
  10. 90
  11. 60
  12. 85
  13. Straight
  14. Obtuse
  15. 30
  16. 150
  17. 70
  18. 120
  19. 60
  20. 80
  21. 100
  22. 75
  23. 55
  24. 45
  25. 100
  26. Acute
  27. 60
  28. 55
  29. 150
  30. 50
  31. 170
  32. 160
  33. 35
  34. 100
  35. 20
  36. 60
  37. 150
  38. 80
  39. 40
  40. 155

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