| Exam Board | OCR MEI |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Marks | 3 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Indices and Surds |
| Type | Evaluate numerical powers |
| Difficulty | Easy -1.8 This is a very basic index laws question requiring only direct recall of fundamental rules: anything to the power 0 equals 1, and fractional powers represent roots. Both parts are single-step calculations with no problem-solving element, making this significantly easier than average A-level content. |
| Spec | 1.02a Indices: laws of indices for rational exponents |
| Answer | Marks | Guidance |
|---|---|---|
| 5 | (ii) | |
| (iiii)) | 2 | |
| 1 | B1 for 50 or for 25 × 1/25 o.e. | 3 |
Question 5:
5 | (ii)
(iiii)) | 2
1 | B1 for 50 or for 25 × 1/25 o.e. | 3Find the value of each of the following.
\begin{enumerate}[label=(\roman*)]
\item $5^2 \times 5^{-2}$ [2]
\item $100^{\frac{1}{2}}$ [1]
\end{enumerate}
\hfill \mbox{\textit{OCR MEI C1 Q5 [3]}}