iGCSE Mathematics (0580) - C1.8 Standard form- Exam Style Questions Paper 1- New Syllabus
▶️ Answer/Explanation
Multiplying by \(10^8\) moves the decimal point 8 places to the right.
\(1.753\) becomes \(175{,}300{,}000\) (insert zeros as needed after the significant figures).
\[1.753 \times 10^8 = 175\,300\,000\]
✅ Answer: \(175\,300\,000\)
\(1.753\) becomes \(175{,}300{,}000\) (insert zeros as needed after the significant figures).
\[1.753 \times 10^8 = 175\,300\,000\]
✅ Answer: \(175\,300\,000\)
▶️ Answer/Explanation
Standard form requires a number to be written as \(A \times 10^n\), where the value of \(A\) must be between \(1\) and \(10\) (specifically \(1 \le A < 10\)).
In Sam’s answer, the number \(85.1\) is greater than \(10\), so it violates the rule for standard form.
✅ Answer: In standard form, the value \(A\) is written as \(A \times 10^n\) where \(1 \le A < 10\), and \(85.1\) is greater than \(10\).
