Year 1 2D and 3D shapes test answers to download as PDF

These Year 1 2D and 3D shapes test answers give the worked solutions and the marks for every question of the 2D and 3D shapes test. The test is marked out of 20, so you can work out your score.

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Answer to Question 1 (4 marks)
1. The first shape has 3 straight sides, so it is a triangle. (1 mark)
2. The second shape is round with no straight sides, so it is a circle. (1 mark)
3. Count the sides of the triangle: 1, 2, 3. It has 3 sides. (1 mark)
4. A circle has no corners at all, so the answer is 0. (1 mark for 0; no mark for 1.)
Answer to Question 2 (4 marks)
1. All its faces are squares, so the first shape is a cube. (1 mark)
2. The second shape is round all over, like a ball: a sphere. (1 mark)
3. The third shape has two circle faces and a curved side, like a tin: a cylinder. (1 mark)
4. A cube has a top, a bottom and 4 faces round the sides: 1 + 1 + 4 = 6 faces. (1 mark)
Answer to Question 3 (4 marks)
1. A flat shape with 4 equal sides is a square. (1 mark; rectangle gets no mark because its sides are not all equal.)
2. A solid that rolls like a ball is a sphere. (1 mark)
3. Any flat shape with 3 sides is a triangle. (1 mark)
4. A circle at the bottom and a point at the top describes a cone. (1 mark)
Answer to Question 4 (4 marks)
1. Read the pattern from the left: the first shape is a square. (1 mark)
2. The pattern goes square, circle, square, circle, so after a circle comes a square. (1 mark)
3. Count only the round shapes in the picture: there are 2 circles. (1 mark)
4. The finished pattern has 3 squares with 4 corners each: 4 + 4 + 4 = 12 corners. (1 mark for 12; working may be shown as 3 × 4.)
Answer to Question 5 (4 marks)
1. Count every block: 1 cuboid + 1 pyramid + 2 cylinders = 4 solid shapes. (1 mark)
2. The pyramid has a square base and 4 triangle faces: 1 + 4 = 5 faces. (1 mark)
3. A cuboid is like a box: top, bottom, front, back and two ends, so it has 6 flat faces. (1 mark)
4. Add the faces of the two shapes: 6 + 5 = 11 faces in all. (1 mark)

Total : 20 marks

How to use these Year 1 2D and 3D shapes test answers

First, sit the test under timed conditions before you read anything here. Then mark each answer and give yourself the marks shown, including method marks. When you lose marks, read the worked solution and find the step you missed. After that, revise the 2D and 3D shapes lesson and redo the worksheet.

Also, the Year 1 2D and 3D shapes test answers are available as a PDF, so a teacher can mark printed tests quickly. Moreover, all the pages of this chapter work together, so you can move between them at any time. For example, many pupils read the lesson on Monday, practise on Wednesday and test themselves on Friday.