| Exam Board | OCR MEI |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Marks | 4 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Indices and Surds |
| Type | Evaluate numerical powers |
| Difficulty | Easy -1.8 This is a straightforward recall question on index laws requiring minimal calculation. Part (i) tests basic negative and zero power rules (standard C1 content), while part (ii) involves a fractional power but follows a routine procedure: find cube root then raise to power 4. No problem-solving or conceptual insight required—purely mechanical application of memorized rules. |
| Spec | 1.02a Indices: laws of indices for rational exponents |
| Answer | Marks | Guidance |
|---|---|---|
| 11 | (i)(A) 1/16 | 1 |
| decimals | accept 0.0625 | |
| 11 | (i)(B) 1 | 1 |
| Answer | Marks | Guidance |
|---|---|---|
| 11 | (ii) 256/625 | 2 |
| or 0.8 | accept 0.4096 |
Question 11:
11 | (i)(A) 1/16 | 1 | isw attempted conversion of 1/16 to
decimals | accept 0.0625
11 | (i)(B) 1 | 1 | set image ‘fit to height’ so that in marking this question
you also check that there is no working on the back
page attached to the image
11 | (ii) 256/625 | 2 | M1 for num or denom correct or for 4/5
or 0.8 | accept 0.4096\begin{enumerate}[label=(\roman*)]
\item Write down the value of each of the following.
\begin{enumerate}[label=(\Alph*)]
\item $4^{-2}$ [1]
\item $9^0$ [1]
\end{enumerate}
\item Find the value of $\left(\frac{64}{125}\right)^{\frac{4}{3}}$. [2]
\end{enumerate}
\hfill \mbox{\textit{OCR MEI C1 Q11 [4]}}