For Class 7 Mathematics, explain or solve a expressing large numbers in standard form question from the chapter "Exponents and Powers". Focus on revision challenge and show the working clearly.
Step-by-step solution path
Read the topic idea: Expressing large numbers in standard form.
Recall the core explanation from the chapter: Mathematics syllabus chapter for Class 7.
Use the related formula "aแต ร aโฟ = aแตโบโฟ" as the main tool while solving.
Write the reasoning in simple school-level language before the final answer.
Final learning answer
This example is centred on Expressing large numbers in standard form. A strong solution should identify the correct data, apply aแต ร aโฟ = aแตโบโฟ, and explain each transition instead of jumping directly to the answer.