Answer:
844 m
Explanation:
It is given that,
Grade 3 students used three rolls of ribbons measuring 300 metres, 286 metres and 258 metres for dance in primary Concert.
We need to find the total length of the ribbons. It means we can add all the lengths to find the total length of the ribbon. So,
Total length = 300 + 286 + 258
= 844 m
So, the total length of ribbons is 844 m.