1. Watch the video.

2. Complete the exercise below in your maths book (or on grid paper), showing all working out. 

ANSWERS: 

1 a) 7.3 b) 7.2 c) 8.2 d) 14.3 e) 7.1 f) 14.3

ANSWERS: 

2 a)  6.7 b) 10.8 c )11.3 d) 8.2