Maths Literacy Grade 12 Questions and Answers for 2021 Maths Literacy is a subject designed to equip students with practical mathematical skills relevant to everyday life. While it may not delve deeply into abstract mathematical concepts, it’s crucial for understanding finances, measurements, and data interpretation. Grade 12 Maths Literacy represents the culmination of years of learning, where students apply their knowledge to solve real-world problems. In this blog post, we’ll explore some typical Grade 12 Maths Literacy questions and provide clear answers to help students navigate through their studies.
- Financial Literacy: Question: Sarah wants to take out a loan to buy a car. The car costs R150,000, and she plans to repay the loan over 5 years. If the interest rate is 8% per annum, calculate her monthly repayment amount.
Answer: To calculate the monthly repayment amount, Sarah can use the formula for monthly loan payments:
Monthly Payment=Principal×Monthly Interest Rate1−(1+Monthly Interest Rate)−n
Where:
- Principal (P) = R150,000
- Annual Interest Rate (r) = 8% or 0.08
- Number of Payments (n) = 5 years * 12 months/year = 60 months
Plugging in the values:
Monthly Payment=150000×0.08121−(1+0.0812)−60
Monthly Payment≈10001−(1+0.0067)−60
Monthly Payment≈10001−(1.0067)−60
Monthly Payment≈10001−0.4414
Monthly Payment≈10000.5586
Monthly Payment≈R1789.21
Therefore, Sarah’s monthly repayment amount is approximately R1789.21.
- Data Handling: Question: The table below shows the marks obtained by 30 students in their Maths Literacy final exam. Calculate the mean, median, and mode of the marks.
| Marks |
|---|
| 65 |
| 72 |
| 58 |
| 72 |
| 85 |
| 60 |
| 72 |
| 78 |
| 65 |
| 70 |
| 68 |
| 75 |
| 80 |
| 62 |
| 68 |
| 72 |
| 78 |
| 75 |
| 72 |
| 85 |
| 70 |
| 68 |
| 72 |
| 78 |
| 65 |
| 80 |
| 75 |
| 70 |
| 68 |
| 72 |
Answer: Mean: To find the mean, add up all the marks and divide by the total number of students.
Mean=65+72+58+…+7230 Mean=205830 Mean=68.6
Median: The median is the middle value when the data is arranged in ascending order.
Arranging the data in ascending order: 58, 60, 62, 65, 65, 65, 68, 68, 68, 70, 70, 70, 72, 72, 72, 72, 72, 72, 72, 75, 75, 75, 78, 78, 78, 80, 80, 85, 85, 90
There are 30 data points, so the median is the average of the 15th and 16th values:
Median=72+722 Median=72
Mode: The mode is the value that appears most frequently.
In this case, the mode is 72 as it appears 8 times, more than any other value.