Perimeter of rectangles
for 5th grade
Use the formula perimeter P = 2 x (length + width) to calculate the perimeter of rectangles
Calculate the perimeter of rectangles
To calculate the perimeter of a rectangle, you need to add up the lengths of all four sides. The formula is:
Perimeter = 2(length) + 2(width)
For example, if the rectangle has a length of 10 units and a width of 5 units, the perimeter would be:
Perimeter = 2(10) + 2(5) = 20 + 10 = 30 units
Another example, if the rectangle has a length of 12 metres and a width of 8 metres, the perimeter would be:
Perimeter = 2(12) + 2(8) = 24 + 16 = 40 metres
Notes on this topic
Use a slow game like 4 in a row to practice this topic first, then when you get into a timed game like Pong, you will have had enough practice to be able to work out the questions really fast!
Below is a table showing the first 5 question answer pairs for the topic "Perimeter of rectangles" as used in the lessons for this topic. Our games and tests for the topic use these 5 items plus 9 additional question answer pairs.
The topic "Perimeter of rectangles" is in the category Algebra for 5th grade (ages 10 to 11).
Revise 'Perimeter of rectangles' with one of our games for 5th grade
Each of our math topics for elementary are made up of between 6 and 20 question and answer pairs (both the written form and a robot voice speaking those questions and answers). Each topic can be used with all the activities on the site.
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