3D Objects

11 Grade 5 Mathematics questions on 3D Objects, with worked marking schemes. 11 questions are available on this topic in full.

1. Question 1

   1 mark

   How many faces does a cuboid have?

   A. 8

   B. 4

   C. 6

   D. 12

   (1 mark)

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2. Question 2

   1 mark

   How many edges does a cube have?

   A. 10

   B. 8

   C. 12

   D. 6

   (1 mark)

   Marking scheme

   C. $12$ — four edges round the top, four round the bottom and four uprights. B is the number of vertices and D the number of faces. Faces, edges and vertices are the three counts most easily swapped for one another.

3. Question 3

   1 mark

   A cylinder has ___ flat circular faces.

   A. 0

   B. 2

   C. 3

   D. 1

   (1 mark)

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4. Question 4

   1 mark

   How many edges does a triangular prism have?

   A. 12

   B. 6

   C. 8

   D. 9

   (1 mark)

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5. Question 5

   1 mark

   A triangular pyramid (tetrahedron) has ___ faces.

   A. 3

   B. 6

   C. 5

   D. 4

   (1 mark)

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6. Question 6

   1 mark

   A sphere has ___ face(s).

   A. 0 flat faces and 1 curved surface

   B. 1 curved surface

   C. 6 flat faces

   D. 2 flat faces

   (1 mark)

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7. Question 7

   1 mark

   How many edges does a cuboid have?

   A. $8$

   B. $12$

   C. $4$

   D. $6$

   (1 mark)

   Marking scheme

   B. $12$ — four edges round the top, four round the bottom and four uprights. D is its number of faces and A its number of vertices. Faces, edges and vertices are the three counts most easily swapped for one another.

8. Question 8

   1 mark

   Which 3D shape has a circular base and comes to a point?

   A. Cone

   B. Pyramid

   C. Cylinder

   D. Sphere

   (1 mark)

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9. Question 9

   1 mark

   Which net folds into a cube?

   A. A net of 6 triangles

   B. A cross-shaped net of 6 squares

   C. A net of 4 triangles

   D. A net of 2 circles and 1 rectangle

   (1 mark)

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10. Question 10

    1 mark

    How many vertices does a cube have?

    A. 12

    B. 6

    C. 8

    D. 4

    (1 mark)

    Marking scheme

    C. $8$ — a cube has a corner at each end of its four upright edges: $4+4=8$. B is its number of faces and A its number of edges. Faces, edges and vertices are the three counts most easily swapped for one another.

11. Question 11

    1 mark

    A square pyramid has ___ faces.

    A. 4

    B. 5

    C. 6

    D. 8

    (1 mark)

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