Foundation November 2021 Paper 3 Q18
18 A carpenter measures the length, \(k\) metres, of a piece of wood.
They write
(a) Put rings around all possible values of \(k\) in the list below.\[3.349 \qquad 3.39 \qquad 3.44 \qquad 3.45 \qquad 3.55\]
[2]
(b) The carpenter says
\(3.35 \leqslant k \lt 3.45\) means that the length of the piece of wood is 3.4 metres correct to the nearest centimetre.
(i) Explain how you know that she is incorrect. [1]
(ii) Complete the interval for 3.4 m, correct to the nearest centimetre. \(3.395 \leqslant k \lt \ldots\ldots\) [1]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 3.39 and 3.44 only | 2 | B1 for one only or for two correct and one extra | |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| (i) 10 cm [between 3.35 and 3.45] oe or [If to nearest cm it should be between] 3.395 and 3.405 | 1 | Mention of 10 cm (range or difference) oe | |
| (ii) 3.405 | 1 | ||