Assignment
1. Copy and complete this table.
Fraction
Decimal
Percentage
3
4
(a)
(b)
(c)
(d)
18%
(e)
0.05
(f)
2. Calculate these, and write each answer in standard form.
(a) 109 – (3.47 × 107)
(b) (13.4 × 10244) + (23.1 × 10243)
3. The value of a boat is £220 000.Each year the value decreases by 12% of the value at the
beginning of that year.
Work out the value of the boat after four years have passed. Give your answer to the
nearest pound.
4. Windthrup bought a car for £9500 which depreciated by 6% in the first year and 3.5% in
the second year.
a) Windthrup thinks that in two years his car depreciated by 9.5% over the two years.
Show, with any necessary calculations, that Winthrup is wrong.
b) Windthrup's car depreciates by x% during the third year. At the end of the three years
the car is worth £8190. Find the value of x% to three significant figures.