Foundation November 2024 Paper 1 Q26

EdexcelCurrent spec3 marksStandard Form

(a) Write \(8.4 \times 10^{-5}\) as an ordinary number. (1)

(b) Work out \(\left(6.5 \times 10^{-40}\right) \times \left(8 \times 10^{185}\right)\)
Give your answer in standard form. (2)

Scheme	Marks
0.000 084	B1
	(1)

Mark scheme (b)

Scheme	Marks
\(52 \times 10^{145}\) or \(5.2 \times 10^n\) or \(p \times 10^{146}\) where \(1 \leqslant p \lt 10\)	M1
Correct answer scores full marks (unless from obvious incorrect working) Answer: \(5.2 \times 10^{146}\)	A1
	(2)
	(3 marks)