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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 101 · 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 150°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  3. 3.Two angles of a triangle are 65° and 20°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 85° and 20°. What is the third angle (in degrees)?
  8. 8.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  9. 9.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  11. 11.Two angles of a triangle are 30° and 25°. What is the third angle (in degrees)?
  12. 12.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  13. 13.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 50° and 55°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 35° and 65°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  29. 29.Two angles of a triangle are 30° and 45°. 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.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  35. 35.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  36. 36.Two angles of a triangle are 85° and 35°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 50° and 170°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?

Answer key

  1. 30
  2. 90
  3. 95
  4. 120
  5. 100
  6. 110
  7. 75
  8. Straight
  9. 150
  10. 75
  11. 125
  12. Right
  13. 90
  14. 190
  15. 30
  16. 85
  17. 120
  18. 150
  19. 65
  20. 20
  21. 95
  22. 75
  23. 80
  24. 25
  25. 25
  26. 80
  27. 170
  28. 120
  29. 105
  30. 60
  31. 130
  32. 145
  33. 60
  34. 210
  35. Obtuse
  36. 60
  37. 90
  38. 15
  39. 140
  40. 15

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