NAP Yr 9 Example Test: Numeracy Q28 - 47.5 cm?

In summary, the conversation discusses the solution to Question 28 of a test on numeracy for Year 9 students. The question asks for the area of a shape and the correct answer is 46 centimeters squared. However, one participant got 47.5 centimeters squared and others questioned their work. The conversation concludes that the correct answer is indeed 46 centimeters squared and provides a detailed explanation on how to arrive at this answer.
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  • #2
I get 46 cm². Can you post your work so we can see what you did wrong?
 
  • #3

I get 46 too, but in meters and not in centimeters! (which makes a huge difference) (Sweating)

Areas of triangular faces are already given. We just need to find separate areas of all rectangular faces and add all triangular-face-areas to rectangular-face-areas in order to get the total area.

\(\displaystyle 3+3+(5 \times 2.5)+(5 \times 2.5)+(5 \times 3) = 46 \text{m}^{2}\)

Also, I tried many experiments to find a situation where someone gets confused and gets the answer as \(\displaystyle 47.5\) by mistake, but found no such situation!
 

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FAQ: NAP Yr 9 Example Test: Numeracy Q28 - 47.5 cm?

What is the purpose of the NAP Yr 9 Example Test?

The NAP Yr 9 Example Test is designed to assess students' numeracy skills and knowledge in order to provide a snapshot of their abilities in relation to the national standards for Year 9 students.

What does the question "Numeracy Q28 - 47.5 cm" mean?

This question is referring to a specific question on the NAP Yr 9 Example Test, which asks students to measure a line segment and input the answer in centimeters.

How is the NAP Yr 9 Example Test scored?

The NAP Yr 9 Example Test is scored using a proficiency scale, which ranges from 0 to 1000. Students' scores are then compared to the national standards for Year 9 students to determine their level of numeracy proficiency.

Can students use calculators on the NAP Yr 9 Example Test?

No, calculators are not allowed on the NAP Yr 9 Example Test. This is to assess students' mental math abilities and problem-solving skills.

How can the results of the NAP Yr 9 Example Test be used?

The results of the NAP Yr 9 Example Test can be used to identify areas where a student may need extra support or to track a student's progress over time. They can also be used to inform teaching strategies and interventions to improve students' numeracy skills.

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