Question

There is a gap of 1 metre you put a table into gap.The table is 70 centimetres wide.How much space is left?

Answer 1

100cm=1m
70cm= x
You cross multiply
100x=70
Divide both sides by 100
.:x=7/10 m or 0.7m
1m-0.7m=0.3m

Answer 2

.3 meter or 30 cemimeters