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(a) (i) Write 350 centimetres in metres - OCR - GCSE Maths - Question 2 - 2020 - Paper 1

Question 2

(a) (i) Write 350 centimetres in metres. (ii) Write 1.52 litres in millilitres. (b) Work out. 5.7 cm + 30 mm. Give your answer in centimetres.

Worked Solution & Example Answer:(a) (i) Write 350 centimetres in metres - OCR - GCSE Maths - Question 2 - 2020 - Paper 1

Step 1

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Answer

To convert centimetres to metres, use the conversion factor that 1 metre equals 100 centimetres. Therefore, to convert 350 centimetres to metres:

$350 ext{ cm} = \frac{350}{100} ext{ m} = 3.5 ext{ m}$

Thus, the answer is 3.5 m.

Step 2

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Answer

To convert litres to millilitres, recall that 1 litre is equal to 1000 millilitres. Hence, to convert 1.52 litres to millilitres:

$1.52 ext{ L} = 1.52 \times 1000 ext{ mL} = 1520 ext{ mL}$

Thus, the answer is 1520 mL.

Step 3

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Answer

First, convert 30 mm to centimetres. There are 10 millimetres in a centimetre, thus:

$30 ext{ mm} = \frac{30}{10} ext{ cm} = 3 ext{ cm}$

Now, add the two lengths together:

$5.7 ext{ cm} + 3 ext{ cm} = 8.7 ext{ cm}$

Thus, the answer is 8.7 cm.

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