| Exam Board | OCR MEI |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Marks | 5 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Indices and Surds |
| Type | Simplify algebraic expressions with indices |
| Difficulty | Easy -1.3 This is a straightforward C1 question testing basic index laws and algebraic manipulation. Part (i) is simple recall of fractional/negative indices, and part (ii) requires routine application of power rules and simplification. Both parts are standard textbook exercises with no problem-solving element, making this easier than average. |
| Spec | 1.02a Indices: laws of indices for rational exponents |
| Answer | Marks | Guidance |
|---|---|---|
| 8 | (i) | 1 |
| Answer | Marks |
|---|---|
| 3 | 2 |
| [2] | 1 |
| Answer | Marks | Guidance |
|---|---|---|
| 92 | eg M1 for 3-1 | |
| 8 | (ii) | 32x10 |
| Answer | Marks |
|---|---|
| y3 | 3 |
| [3] | B1 for each element |
| if B0, allow M1 for (4x4)3 = 64x12 | allow 25 instead of 32 |
Question 8:
8 | (i) | 1
as final answer
3 | 2
[2] | 1
allow
3
1
M1 for or for 91 2 9or 3 soi
1
92 | eg M1 for 3-1
8 | (ii) | 32x10
32x10y-3 or oe as final answer
y3 | 3
[3] | B1 for each element
if B0, allow M1 for (4x4)3 = 64x12 | allow 25 instead of 32\begin{enumerate}[label=(\roman*)]
\item Evaluate $9^{-\frac{1}{2}}$. [2]
\item Simplify $\frac{(4x^4)^3 y^2}{2x^4 y^5}$. [3]
\end{enumerate}
\hfill \mbox{\textit{OCR MEI C1 Q8 [5]}}