Math 4 · Unit 8: Angles · Cambridge Primary Maths Stage 4

Questions

1. 1. Estimate the size of this angle in degrees.

   • between 50 degrees and 70 degrees
   • between 110 degrees and 130 degrees
   • between 150 degrees and 170 degrees
   • exactly 90 degrees
   Check

2. 2. How many degrees are in one right angle quarter turn?

   • 90 degrees
   • 45 degrees
   • 180 degrees
   • 360 degrees
   Check

3. 3. Choose the best estimate for this angle.

   • 20 degrees
   • 80 degrees
   • 45 degrees
   • 100 degrees
   Check

4. 4. Choose the best estimate for this angle.

   • 80 degrees
   • 45 degrees
   • 130 degrees
   • 170 degrees
   Check

5. 5. Choose the best estimate for this angle.

   • 85 degrees
   • 60 degrees
   • 130 degrees
   • 95 degrees
   Check

6. 6. Choose the best estimate for this angle.

   • 30 degrees
   • 80 degrees
   • 60 degrees
   • 120 degrees
   Check

7. 7. Choose the best estimate for this angle.

   • 20 degrees
   • 160 degrees
   • 110 degrees
   • 90 degrees
   Check

8. 8. Match the label to the angle by estimating the size of the angles.

   • a
   • b
   • c
   • d
   • e

   • 15 degrees
   • 135 degrees
   • 45 degrees
   • 90 degrees
   • 170 degrees
   Check

9. 9. How many right angles do you turn to make a full circle?

   • 3
   • 4
   • 2
   • 360
   Check

10. 10. How many degrees are there in a full circle?

    • 400 degrees
    • 360 degrees
    • 90 degrees
    • 180 degrees
    Check

11. 11. How many right angles do you turn to make three-quarters of a circle?

    • 2
    • 270
    • 3
    • 4
    Check

12. 12. How many degrees are there in three-quarters of a circle?

    • 75 degrees
    • 300 degrees
    • 270 degrees
    • 180 degrees
    Check

13. 13. Estimate the size of this angle in degrees.

    • 90 degrees
    • 15 degrees
    • 150 degrees
    • 50 degrees
    Check

14. 14. Estimate the size of this angle in degrees.

    • 60 degrees
    • 100 degrees
    • 80 degrees
    • 150 degrees
    Check

15. 15. Estimate the size of this angle in degrees.

    • 120 degrees
    • 100 degrees
    • 20 degrees
    • 160 degrees
    Check

16. 16. Estimate the size of this angle in degrees.

    • 90 degrees
    • 135 degrees
    • 20 degrees
    • 45 degrees
    Check

17. 17. Estimate the size of this angle in degrees.

    • 160 degrees
    • 110 degrees
    • 30 degrees
    • 70 degrees
    Check

18. 18. Estimate the size of this angle in degrees.

    • 45 degrees
    • 135 degrees
    • 100 degrees
    • 170 degrees
    Check

19. 19. What can you do to help you make better estimates of angles?

    • Compare it with a right angle (90 degrees) and with half a right angle (45 degrees).
    • Guess a number without looking at the angle.
    • Always guess 90 degrees.
    • Only look at how long the arms are.
    Check

20. 20. Sal turned on the spot 270 degrees. How many right angles is that?

    • 2
    • 3
    • 27
    • 4
    Check