ZIMSEC O-Level Mathematics Paper 1 November 2024 Marking Scheme

About this marking scheme

This is the ZIMSEC O-Level Mathematics marking scheme for Paper 1 from November 2024. It shows how marks are awarded, so you can mark your own answers to the matching question paper. Time allowed: 7 hours 30 minutes. See the question paper.

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Text from the first page

PAPER 1 [N 20247 ]
POSSIBLE SOLUTIONS
1) (i) 0,1000
(ii) 0,09900
(b) $9,874 \times 10^{-2}$
a) $5^{2} \times 7^{2}$
(b) $5 \times 7=35$
3) $ 676,00
4) 1515 hours
(b) 7 hours 30 minutes
5) $x y z$ simelar to $\phi p z$
(b) $9 z=18 \mathrm{~cm}$
6) 40
b) $\frac{9}{40}$
c) $\frac{45}{1560}$ or $\frac{9}{312}$
7) $\vec{P}=\binom{-8}{6}$
(b) 10 units
8) a) $2<x<6$
(b) 4
9)
\[
\begin{array}{l}
Q \hat{N}=42^{\circ}
Q \hat{M} N=90^{\circ}
M \hat{O} \varphi=84^{\circ}
\end{array}
\]
10) a) $770 \mathrm{~cm}^{3}$
b) $1,09 \mathrm{~g} / \mathrm{cm}^{3}$
ii) 2 his and 21 minutes
(b) 119 ten
12) 1:500000
(b) 18 km
(c) $5 \mathrm{~cm}^{2}$
13) $y=3 / 8 x^{2} z$
b) 37,5
14) (a) 4
(b) $x=2$
15) $O P=3$ units
\[
y=\frac{1}{2} x
\]
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