Question

Louise used this figure to model the expression 20/4

What error did Louise make in her model?

The small arrows are pointed in the wrong direction.
The small arrows should all end in the same place as the large one.
The arrows should start at zero.
There should be one large arrow and 20 small arrows.

Answer 1

The arrow should start at zero

Explanation:

Because if it star any where else it would be incomplete

Answer 2

The arrows should start at zero because then the expression wouldn't be true. She should have made 5 groups if she had started at zero.