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There are 100cm in a metre and there are 1000m in a kilometre.

Year 2 Fractions - Lengths

Use rulers and strips to find halves and quarters of lengths. Estimate first, then measure to check. Build confidence reading centimetres and marking equal parts.

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Fascinating Fact:

Estimate, then check. “About halfway is 9 cm.” Measure properly. If the strip is 18 cm, half is exactly 9 cm.

In KS1 Maths, pupils use rulers, number lines, and strips to split lengths into equal parts. They estimate first, then measure in centimetres to prove halves and quarters accurately.

Key Terms

Fraction: A way to show equal parts of a whole length, such as 1/2 or 1/4.
Half (1/2): One of two equal parts of a length; the midpoint on a ruler.
Quarter (1/4): One of four equal parts of a length; marks are evenly spaced.

Frequently Asked Questions (Click to see answers)

How do I find half of a length in Year 2?

Measure the whole length in centimetres, divide by 2, then mark that point as the midpoint. For 18 cm, half is 9 cm.

What does a quarter of a length mean?

A quarter is one of four equal parts. Measure the total, divide by 4, and mark those equal gaps along the strip or ruler.

How can I check my estimate for halves and quarters?

Use a ruler to measure precisely in centimetres. Count the spaces and confirm each part matches the calculated size.

Try These Related Quizzes

Question 1

Harry is 120 cm tall. His little brother is half this height. How tall is Harry’s brother?

40cm

60cm

80cm

240cm

Half of 120 is 60

Question 2

May grows her sunflower to 80cm. Jake's is only ¹⁄₄ of this height. How tall is Jake's sunflower?

80cm

60cm

40cm

20cm

To find a quarter, divide by 4

Question 3

Jim ran 1¹⁄₂ km. Ben ran 1¹⁄₄ km. How much further did Jim run than Ben?

1 km

¹⁄₂ km

¹⁄₄ km

³⁄₄ km

Two quarters are the same as a half

Question 4

I have a piece of ribbon which is 64cm long. I cut it in half - how long will each piece be?

40cm

23cm

28cm

32cm

Half of 64 is 32

Question 5

John walks 4 km to school. A ¹⁄₄ of the way to school is a sweet shop. How far is it from John’s home to the sweet shop?

1 km

2 km

4 km

8 km

To find a quarter of a number, divide it by 4 - or half it and half it again

Question 6

Sam walks 1 km to school every day. She meets her best friend exactly halfway. How far does Sam walk before she meets her friend?

250m

500m

2km

100km

1 km is 1000m. Half of 1000 is 500

Question 7

A roll of tape measures 12m. I use ³⁄₄ of the tape. How much is left?

5 m

3 m

2 m

6 m

To find a quarter, divide 12 by 4 to get an answer of 3. If ¹?₄ is 3, then ³?₄ is 9, leaving 3m of tape

Question 8

Cubes measure 3cm each. I make a row of 10 cubes. Then I break the row in half. How long is each half of the row?

10cm

12cm

15cm

13cm

3cm x 10 = 30cm. Half of 30 is 15

Question 9

I measure my pencil on Monday and it is 16cm long. By Friday, it is only half of this length. How long is my pencil on Friday?

10cm

8cm

4cm

12cm

Half of 16 is 8, so the pencil must be 8cm long

Question 10

What is ¹⁄₄ of a kilometre?

25cm

25m

250cm

250m

1 km is 1000m. Half of this is 500m, so a quarter is 250m

You can find more about this topic by visiting BBC Bitesize - Fractions

Author: Angela Smith (Primary School Teacher & KS1 Quiz Writer)

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