4MA0 Higher June 2013 Paper 4 Q14

EdexcelHigherOld spec5 marksPercentages Standard Form

14 The table shows the surface areas, in km², of five oceans.

Ocean	Surface area (km²)
Atlantic	\(7.68 \times 10^7\)
Indian	\(6.86 \times 10^7\)
Pacific	\(1.56 \times 10^8\)
Southern	\(2.03 \times 10^7\)
Arctic	\(1.41 \times 10^7\)

(a) Which of these oceans has the largest surface area? (1)

(b) Work out the total surface area, in km², of all five oceans.
Give your answer in standard form. (2)

The total surface area of the Earth is \(5.10 \times 10^8\) km².

(c) Express the total surface area of the five oceans as a percentage of the total surface area of the Earth.
Give your answer correct to 1 decimal place. (2)

Scheme	Marks
Pacific	B1
	(1)

Mark scheme (b)

Scheme	Marks
\((7.68 \times 10^7) + (6.86 \times 10^7) + (1.56 \times 10^8) + (2.03 \times 10^7) + (1.41 \times 10^7)\)	M1
\(3.358 \times 10^8\)	A1
	(2)

Notes

M1: oe or digits 3358 or 336

A1: accept \(3.36 \times 10^8\)

Scheme	Marks
\((\text{“}3.358 \times 10^8\text{”} \div (5.1 \times 10^8)) \times 100\)	M1 ft
65.8	A1
	(2)