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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 972 · 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.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  2. 2.Two angles of a triangle are 40° and 125°. What is the third angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 90° and 70°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 60° and 160°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  14. 14.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  17. 17.An angle measures 30°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  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 55°. What is the other angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  21. 21.An angle measures 10°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  22. 22.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 90° and 190°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  31. 31.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  32. 32.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 50° and 190°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  38. 38.Two angles of a triangle are 25° and 150°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 90° and 100°. What is the third angle (in degrees)?

Answer key

  1. 110
  2. 15
  3. 80
  4. 70
  5. 50
  6. 75
  7. 130
  8. 160
  9. 200
  10. 140
  11. 90
  12. 60
  13. Right
  14. 30
  15. 65
  16. 150
  17. Acute
  18. 150
  19. 35
  20. 10
  21. Acute
  22. 145
  23. 55
  24. 170
  25. 140
  26. 80
  27. 10
  28. 180
  29. 80
  30. 25
  31. Straight
  32. 135
  33. 30
  34. 120
  35. 35
  36. 85
  37. 30
  38. 5
  39. 180
  40. 170

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