Estimating area and Chapter IV review
Answers are for parents and teachers.
1
A shape in a notebook covers 40 squares (4 squares = 1 cm²). About how many cm² is its area?
10
2
Find the area of a square plot with side 20 m in m² and in ar.
400 m², 4 ar
3
A plot is 80 m × 70 m. Find its area in ar.
56
4
A 4 × 3 cm corner is cut from a 12 × 8 cm rectangle. What is the area (cm²)?
84
5
A room floor is 6 m × 15 m and 200 g of paint covers 1 m². How many kg of paint are needed?
18