Page 194 - Mathematics Coursebook

14 Vishan has a ruler 30 cm long.
Explain how Vishan can use his ruler to draw a line exactly 42.5 cm long.
15 a Round 127 to the nearest 10.
b Round 423 to the nearest 100.
c Round 3.452 to one decimal place.
16 Work these out. a 12.4 × 8 b 37.65 ÷ 5
17 Solve each of these equations.
a x + 3 = 15 b 4x = 12
c 3x − 2 = 13 d x + 9 = 14
3

18 A train leaves at 14 35 and arrives at 17 12.
a How long did the journey take?
b The train arrives 25 minutes late. When was it due to arrive?

19 Olivia makes a journey by car. She draws a graph to illustrate it.
y
100
Distance travelled (km) 50

0
0 1 2 3 x
Time (hours)

a How long did it take her to travel the first 40 kilometres?
b Olivia stopped for a rest during the trip. For how long did she stop?
c How far did she travel in the last hour?
20 Chris and Mair share a gas bill in the ratio 3 : 2.
The gas bill is £85.
How much does each of them pay?

21 Fahran has a five-sided spinner.
a He spins the spinner once.
What is the probability that the spinner lands on:

i 4 4 3
ii an odd number 8 9
iii a number smaller than 5? 11

b Fahran spins the spinner 50 times.
How many times, out of the 50 spins, would you expect the spinner to land on the number 9?

End of year review 193