| Exam Board | OCR MEI |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Marks | 5 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Indices and Surds |
| Type | Evaluate numerical powers |
| Difficulty | Easy -1.8 This is a straightforward drill question testing basic index laws and arithmetic with no problem-solving required. All three parts involve direct application of memorized rules (power of a product, negative indices, fractional indices) with simple numbers, making it significantly easier than average A-level content. |
| Spec | 1.02a Indices: laws of indices for rational exponents |
| Answer | Marks |
|---|---|
| 2 | (ii)) a6b7 |
| Answer | Marks |
|---|---|
| (iiiii) | 2 |
| Answer | Marks |
|---|---|
| 2 | B1 for two elements correct; condone |
Question 2:
2 | (ii)) a6b7
(iiii)) 16
(iiiii) | 2
1
2 | B1 for two elements correct; condone
multiplication signs left in
SC1 for eg 250 + a6 + b7
condone ±64
M1 for [±]43 or for 4096or for
only −64\begin{enumerate}[label=(\roman*)]
\item Simplify $(5a^2b)^2 \times 2b^4$. [2]
\item Evaluate $\left(\frac{4}{16}\right)^{-1}$. [1]
\item Evaluate $(16)^{\frac{3}{2}}$. [2]
\end{enumerate}
\hfill \mbox{\textit{OCR MEI C1 Q2 [5]}}