Area and Perimeter of a ParallelogramMany different ways to practise your skills finding the areas and perimeters of parallelograms. 
This is level 1. How many grid squares make up the areas of these parallelograms?
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Level 1  Finding the areas of parallelograms by counting squares
Level 2  Using the formula for finding the areas of parallelograms
Level 3  Finding the perimeters of parallelograms
Level 4  Finding the areas and perimeters of parallelograms by measuring lengths
Level 5  Mixed questions including distractors
Level 6  Problem solving including composite shapes and algebra
More on this topic including lesson Starters, visual aids, investigations and selfmarking exercises.
A parallelogram is a foursided shapes with opposite sides of equal length.
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Transum,
Saturday, April 24, 2021
"The questions in the six levels of this of exercises range from the laughingly easy to the headscratchingly hard. The last question of level 6 was adapted from one that appeared on a Senior Mathematical Challenge (SMC) paper.
The SMC is a 90minute, multiplechoice competition from the UK Mathematics Trust aimed at students (Year 13 and below) across the UK. It encourages mathematical reasoning, precision of thought, and fluency in using basic mathematical techniques to solve interesting problems. The problems on the Senior Mathematical Challenge are designed to make students think. Most are accessible, yet still challenge those with more experience."
Mindy Kelly, Newark City Schools
Saturday, July 22, 2023
"The directions say to measure the side lengths to the nearest centimeter, then those side lengths to calculate area and perimeter. If you do that for the middle parallelogram, you get a base of 5 cm and height of 2 cm. The area should be listed as 10 square cm. It is only if you measure the side lengths to the nearest HALF cm that you come closer to the "correct" answer of 12 square cm, which should actually be 13 square cm when 12.5 (2.5 x 5) is rounded to the nearest whole number.
[Transum: Thanks for pointing out this issue Mindy. It is interesting that because of the rounding instruction a different value for the area is obtained depending on whether you use the horizontal line as the 'base' or choose to consider the sloped line as the 'base'. The software now marks either version as correct. Thanks again for taking the time to point this out. A great thing to discuss with students.]"