ZIMSEC O-Level Mathematics 2022 Marking Scheme

About this marking scheme

This is the ZIMSEC O-Level Mathematics marking scheme from 2022. It shows how marks are awarded, so you can mark your own answers to the matching question paper. See the question paper.

More Mathematics O-Level 2022 papers

• Paper 1 November Question Paper1.5 MB
• Paper 2 November Question Paper2.5 MB
• Paper 1 November Marking Scheme3.9 MB
• Paper 2 November Marking Scheme4.2 MB
• Paper 1 Marking Scheme1.3 MB
• Paper 2 November Question Paper1.5 MB
• Paper 1 November Question Paper3.4 MB
• Paper 2 November Question Paper304 KB

Other years: Mathematics O-Level

• 2023 Paper 1 November Marking Scheme2.4 MB
• 2021 Paper 1 November Marking Scheme3.7 MB
• 2023 Paper 2 November Marking Scheme3.0 MB
• 2021 Paper 2 Marking Scheme1.5 MB
• 2023 Paper 1 November Marking Scheme1.8 MB
• 2023 Paper 1 November Marking Scheme2.1 MB
• 2023 Paper 2 November Marking Scheme3.3 MB
• 2024 Paper 2 November Marking Scheme1.6 MB

Text from the first page

Answers
(1).
(a). $A \hat{C} B=90-80^{\circ}=10^{\circ}$
(b)
\[
\hat{B D C}=\hat{B A P}=80^{\circ}
\]
(c)
\[
\begin{aligned}
\hat{A D}  |  =180-(80+58)   |  =42^{\circ}
\end{aligned}
\]
(d).
\[
\begin{aligned}
\hat{A O O}=  |  58 \times 2
=  |  116 .
\end{aligned}
\]
(2). (a)
\[
\begin{array}{l}
(m-n)(4 m+2 n)-(m-n)^{2}
(m-n)[4 m+2 n-(m-n)]
(m-n)[4 m+2 n-m+n]
(m-n)[3 m+3 n]
(m-n)[3(m+n)]
3(m-n)(m+n)
\end{array}
\]