Foundation November 2021 Paper 2 Q9
9 Alec needs to work out the value of \(2 + 3 \times 4\)
He writes
\(2 + 3 = 5\) and \(5 \times 4 = 20\), so \(2 + 3 \times 4 = 20\)
Alec is wrong.
Explain why. (1)
| Answer | Mark | Mark scheme |
|---|---|---|
| Explanation | C1 | for explanation, Acceptable examples Answer should be 14 Should work out \(3 \times 4\) first Alec should times first instead of adding Not used BIDMAS/BODMAS BIDMAS/BODMAS He has done it in the wrong order Alec needs to use brackets so \(2 + (3 \times 4)\) Because you always do multiplication or division first Not acceptable examples Because the answer is wrong It is \(2 + (3 \times 4) = 15\) It needs brackets Because working out should only be one sum |