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# Grade 4 Mathematics Online Lessons on Length

This online course for Grade Four students focuses on the topic of length. Students will learn how to measure length in centimetres, estimate and measure lines in centimetres, convert between metres and centimetres, calculate the perimeter of plane figures, and perform addition and subtraction ...

Lessons (**31**)

- 1.
Complete the table: convert metres to centimetres

1m 24s - 2.
Complete the table: convert centimetres to metres

1m 18s - 3.
Convert to centimetres: a) 9 m 29 cm b) 3 m 19 cm

1m 22s - 4.
Convert to metres and centimetres: a) 259 cm b) 617 cm

1m 28s - 5.
A rope is 5 m long. What is the length of the rope in cm?

0m 49s - 6.
A tailor bought a piece of cloth 6 m 80 cm long. Convert the length of the cloth into centimetres.

0m 58s - 7.
A farmer built a cow shed. The length of the shed was 703 cm. What is the length of the shed in metres and centimetres?

1m 7s - 8.
Work out the perimeter of each shape represented:

3m 23s - 9.
Find the perimeter:

3m 51s - 10.
Add: metres and centimetres

3m 42s - 11.
Add: a) 36 m 50 cm to 57 m 70 cm b) 50 m 65 cm to 54 m 56 cm

3m 26s - 12.
Three pieces of metal bars of lengths 92 cm, 92 cm and 85 cm were joined together to form a triangular shape. What was the total length of the metal bars in metres and centimetres?

2m 44s - 13.
A pipe 8 m 35 cm long was joined to another pipe 4 m 55 cm long. What was the total length of the pipe formed?

1m 39s - 14.
A sugar cane was cut into two pieces of length 1 m 27 cm and 1 m 45 cm. How long was the sugar cane?

1m 37s - 15.
Work out: (subtract metres and centimetres)

1m 46s - 16.
Work out: subtraction involving metres and centimetres

3m 22s - 17.
Work out: a) 6 m 70 cm – 1 m 40 cm b) 32 m 10 cm – 11 m 90 cm c) 25 m 40 cm – 6 m 60 cm

3m 36s - 18.
Maria had a piece of ribbon 1 m 60 cm long. She cut off a piece 50 cm long. What was the length of the remaining piece?

1m 12s - 19.
A metal bar was 13 m 50 cm long. An artisan cut a piece 5 m 28 cm long from the bar. What was the length of the remaining piece?

1m 38s - 20.
A shopkeeper had a roll of polythene paper 45 m 68 cm long. He sold 18 m 40 cm of the paper. Calculate the length of the remaining paper.

1m 32s - 21.
A tailor had a roll of cloth 15 m 80 cm long. He used 9 m 95 cm of the cloth. What was the length of the remaining cloth?

2m 18s - 22.
A fencing post 3 m 40 cm long was cut from a pole 8 m long. Work out the length of the remaining part?

2m 4s - 23.
Work out: multiplying metres and centimetres by a whole number

1m 29s - 24.
Multiply by: a) 11 m 27 m by 5 b) 5 m 62 cm by 2

3m 27s - 25.
A tailor had five ribbons. The length of each ribbon was 2 m 56 cm. What was the total length of the ribbon?

2m 22s - 26.
A carpenter had eight pieces of timber. Each piece of the timber was 1 m 28 cm long. What was the total length?

2m 24s - 27.
A toy car is made using a wire 1 m 20 cm long. What length of wire is required to make 6 such toys?

2m 14s - 28.
Work out (Long division)

2m 1s - 29.
Work out (Long division): divide metres and centimetres by a whole number

1m 22s - 30.
Divide: 23 m 80 cm ÷ 7

1m 35s - 31.
A rope 24 m 20 cm long was cut into 5 equal pieces. How long was each piece?

1m 54s