A wall has an area of 123m². A tin of paint will cover 14m² of wall. Hattie needs to work out how many tins of paint she will need to buy. Use estimation to work out how many tins she needs.
Answer (1)
To estimate how many tins of paint Hattie needs, we can start by determining how many square meters one tin of paint covers and then see how many such tins are required for the total wall area.
Area covered by one tin: 14 m 2 (per tin)
Total area to be painted: 123 m 2
Divide the total area by the area covered per tin to find the number of tins needed: 14 m 2 per tin 123 m 2 ≈ 8.7857
Since Hattie can't purchase a fraction of a tin of paint, she should round up to ensure she has enough paint to cover the entire wall. Therefore, she needs 9 tins of paint.
In summary, by estimating using basic division and rounding up, Hattie will need to buy 9 tins of paint to cover the 123 m² wall.
