Length

14 Grade 3 Mathematics questions on Length, with worked marking schemes. 14 questions are available on this topic in full.

1. Question 1

   1 mark

   Convert 5 km to metres.

   (1 mark)

   Marking scheme for this question

   Create a free account to see it

2. Question 2

   2 marks

   Order these lengths from shortest to longest: 2 m 10 cm, 185 cm, 3 m, 249 cm.

   (2 marks)

   Marking scheme for this question

   Create a free account to see it

3. Question 3

   3 marks

   A classroom is 9 m long and 6 m wide. What is the total distance around it?

   (3 marks)

   Marking scheme for this question

   Create a free account to see it

4. Question 4

   1 mark

   A skipping rope is $3$ metres long. How many centimetres is this? (Remember $1$ metre $=100$ cm.)

   A. $30$ cm

   B. $300$ cm

   C. $3000$ cm

   D. $103$ cm

   (1 mark)

   Marking scheme

   B. $300$ cm — $1$ metre is $100$ cm, so multiply by $100$: $3\times 100=300$. A multiplies by only $10$.

5. Question 5

   1 mark

   Aisha walks 1 km 200 m to school. How many metres does she walk?

   (1 mark)

   Marking scheme for this question

   Create a free account to see it

6. Question 6

   2 marks

   Juma places a $12$ cm pencil end to end with an $8$ cm crayon. What is their total length in centimetres?

   (2 marks)

   Marking scheme

   Add the two lengths: $12+8=20$. The total length is $20$ cm.

7. Question 7

   1 mark

   How many centimetres are in 8 metres?

   (1 mark)

   Marking scheme for this question

   Create a free account to see it

8. Question 8

   2 marks

   Subtract: 5 m 20 cm − 2 m 75 cm = ___

   (2 marks)

   Marking scheme for this question

   Create a free account to see it

9. Question 9

   2 marks

   Which is longer: 3 m 50 cm or 400 cm?

   (2 marks)

   Marking scheme

   400 cm (= 4 m) is longer than 3 m 50 cm (= 350 cm)

10. Question 10

    1 mark

    Convert 250 cm to metres and centimetres.

    (1 mark)

    Marking scheme for this question

    Create a free account to see it

11. Question 11

    1 mark

    Convert 3 m 45 cm to centimetres.

    (1 mark)

    Marking scheme for this question

    Create a free account to see it

12. Question 12

    3 marks

    A ribbon is 4 m 30 cm long. It is cut into 3 equal pieces. How long is each piece?

    (3 marks)

    Marking scheme for this question

    Create a free account to see it

13. Question 13

    2 marks

    Add: 2 m 65 cm + 1 m 48 cm = ___

    (2 marks)

    Marking scheme

    4 m 13 cm (65 + 48 = 113 cm = 1 m 13 cm; 2 m + 1 m + 1 m = 4 m 13 cm)

14. Question 14

    1 mark

    A desk is 120 cm long. What is its length in metres and centimetres?

    (1 mark)

    Marking scheme for this question

    Create a free account to see it

15. 10 more marking schemes are on this page. A free account opens all of them, and lets you build your own paper on the topics you have actually taught, laid out in KNEC format with its full marking scheme.

    Create a free account

More Grade 3 Mathematics topics