Scientific notation (standard form) | Melbourne Selective Entry High School Exam Practice| Maths

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Step-by-step solution for a real-style question from the Victorian Selective Entry High School Placement Test — helping Year 8 students preparing for Melbourne High, MacRobertson Girls', Suzanne Cory, and Nossal High School entry.

✅ What you'll learn:
• How to use a number line to work with negative temperatures
• Subtracting integers to find directed number answers
• How to eliminate wrong multiple-choice options quickly under exam pressure

📚 Designed for students preparing for:
• Victorian Selective Entry High School Examination (Year 9 Entry)
• Melbourne High School
• MacRobertson Girls' High School
• Suzanne Cory High School
• Nossal High School

🎯 Each video covers one exam-style question with a full worked solution so you can understand the method, not just the answer.

Category: Education
Type: Problem walkthrough
Academic System: Australia
Level: Secondary School

Problems:
0:00 Question: The Australian Bureau of Statistics reports that the number of bacteria in a $1$ millilitre sample of lake water is approximately $5.4 \times 10^6$. If this concentration is uniform throughout, how many bacteria would be in a $750$ millilitre water bottle filled from the same lake? Express your answer in scientific notation.
0:25 Step 1: Identify given values
0:43 Step 2: Calculate total bacteria
1:01 Step 3: Express in scientific notation

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Видео Scientific notation (standard form) | Melbourne Selective Entry High School Exam Practice| Maths канала Selectova