Foundation November 2022 Paper 2 Q24
24
(a) Work out \(\quad 2.8^4 + \sqrt{158.76}\)
Give your answer as a decimal. [2 marks]
(b) Work out \(\quad \dfrac{6.09 \times 10^{14}}{4.2 \times 10^9}\)
Give your answer in standard form. [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| 74.0656 or 74.1 or 74.07 or 74.066 | B2 | B1 61.4656 or 61.5 or 61.47 or 61.466 or \(\dfrac{38\,416}{625}\) or 12.6 or \(\dfrac{63}{5}\) or \(\dfrac{46\,291}{625}\) |
Additional guidance
| Truncated answer only eg 74 or 74.0 or 74.06 or 74.065 | B0 |
| An incorrect answer cannot imply B1 – a value for B1 must be seen | |
| Ignore subsequently incorrect rounding or any truncation once a correct B2 response seen eg 74.0656 seen, answer 74 eg 74.07 seen, answer 74.0 | B2 B2 |
| Answer | Mark | Comments |
|---|---|---|
| \(1.45 \times 10^5\) | B2 | B1 correct value not in standard form eg 145 000 or \(14.5 \times 10^4\) |
Additional guidance
| Ignore incorrect conversion if correct B1 value seen eg 145 000, answer \(1.45 \times 10^3\) eg 145 000, answer \(145^3\) | B1 B1 |
| Ignore a decimal point in a correct B1 value if it is part of their conversion attempt | |
| Condone \(10^5 \times 1.45\) | B2 |
| Only \(1.45 \;\; 05\) or \(1.45 \;\; 10^5\) | B0 |
| Only \(1.45 + 10^5\) | B0 |