Squares and square roots
The Maths Habit
How many squares are there
on a chessboard?
204
- Square number
- The answer when a number is multiplied by itself.
- Square root
- The number that was multiplied by itself.
How long is each side?
0.16 cm2
How long is each side?
900 cm2
Side = 30 cm
How long is each side?
1600 cm2
Side = 40 cm
How long is each side?
900 cm2
Side = 30 cm
How long is each side?
2500 cm2
Side = 50 cm
How long is each side?
900 cm2
Side = 30 cm
How long is each side?
3600 m2
Side = 60 m
How long is each side?
900 cm2
Side = 30 cm
What is the area?
0.6 m
Area = 0.36 m2
How long is each side?
900 cm2
Side = 30 cm
How long is each side?
0.49 cm2
Side = 0.7 cm
Which two whole numbers does the square root of 50 lie between?
7 and 8A square has a perimeter of 36 cm. What is its area?
81 cm2
A chessboard has 64 small squares, 49 that are 2 by 2, 36 that are 3 by 3, and so on. How many squares altogether?
64 + 49 + 36 + … + 1 = 204
A square has sides of 13 cm. What is its area?
169 cm2A square has an area of 0.81 cm2. How long is each side?
0.9 cmTia says a square with an area of 0.9 cm2 has sides of 0.3 cm. Is she right? Explain.
No: 0.32 = 0.09
Exit tickets to print
