Perimeter, area and division
Answers are for parents and teachers.
1
A pen is 9 m long and 5 m wide. Find its perimeter and its area.
Perimeter: 9 + 5 + 9 + 5 = 28 m. Area: 9 × 5 = 45 square metres.
2
A square courtyard has sides of 11 m. Find its area.
11 × 11 = 121 square metres.
3
Use counters to divide 32 counters into 4 equal groups. How many are in each group?
32 ÷ 4 = 8 counters in each group. Check: 4 × 8 = 32.
4
Find the perimeter and the area of this rectangle.
Perimeter: 6 + 4 + 6 + 4 = 20 m. Area: 6 × 4 = 24 square metres.
5
Using the goat rule from this lesson, can goats live in a pen that is 7 m long and 4 m wide?
Yes. The area is 7 × 4 = 28 square metres, and 28 is more than 24.