A car travels 274 km. It travels an average of 9.1 km on a litre of petrol. Write down a calculation you could do to find the nu
mber of litres used. please step by step explanation 
2 answers:
You might be interested in
Answer:
n + 11 and 11 + n
Step-by-step explanation:
Let n be the unknown number,
n is increased by 11,
That is, n + 11
By the commutative property of addition,
The expression would be,
11 + n
For drawing a model that shows n + 11
Take two boxes in which first shows n and second shows 11 and add them,
Similarly, for showing 11 + n, take first box that shows 11 and second box that shows n then add them.
