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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 626 · 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 8 o'clock (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 120° and 140°. What is the third angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  8. 8.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  9. 9.Two angles of a triangle are 100° and 20°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 20° and 55°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  12. 12.An angle measures 155°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  13. 13.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  14. 14.An angle measures 145°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  15. 15.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  19. 19.Two angles of a triangle are 20° and 95°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 20° and 65°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  26. 26.An angle measures 45°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  27. 27.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  28. 28.An angle measures 95°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  29. 29.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 70° and 180°. What is the third angle (in degrees)?
  32. 32.An angle measures 10°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  33. 33.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  35. 35.An angle measures 30°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  36. 36.Two angles of a triangle are 50° and 110°. What is the third angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 25° and 55°. What is the third angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?

Answer key

  1. 120
  2. 100
  3. 150
  4. 160
  5. 10
  6. 30
  7. 10
  8. Straight
  9. 60
  10. 105
  11. 95
  12. Obtuse
  13. Right
  14. Obtuse
  15. 55
  16. 30
  17. 170
  18. 210
  19. 65
  20. 95
  21. 115
  22. 50
  23. 65
  24. 60
  25. 45
  26. Acute
  27. 135
  28. Obtuse
  29. 180
  30. 165
  31. 110
  32. Acute
  33. 15
  34. 70
  35. Acute
  36. 20
  37. 90
  38. 120
  39. 100
  40. 45

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