Compare areas of rectangles and say by how much one is bigger than the other
Home / 4th grade / Measurements / Calculate & compare / Rectangles: how much bigger
To calculate the area of a rectangle, you multiply its width by its height. In this topic, you are asked to calculate the area of two rectangles and determine how much bigger the larger one is than the smaller one. To do so, you will need to calculate the area for both rectangles then subtract the smaller area from the larger. Your answer will be in units square.
Let's say you have 2 rectangles, one with dimensions of 5 m x 3 m and the other with dimensions 6 m x 4 m.
To calculate the area of the rectangles, multiply width by height.
The area of the first rectangle is:
Rectangle 1: Area = 5 m × 3 m = 15 m²
The area of the second rectangle is:
Rectangle 2: Area = 6 m × 4 m = 24 m²
The second rectangle has a bigger area than the first rectangle. The difference in area of the two rectangles is:
Difference in area = 24 m² - 15 m² = 9 m²
So, you can see that the second rectangle has an area 9 m² greater than the first rectangle.
This topic asks you to calculate the area of two rectangles and work out the difference in size. Your answers should be in square units such as square centimeters (cm²) or square meters (m²).
Below is a table showing the first 6 question answer pairs for the topic "Rectangles: how much bigger" as used in the lessons for this topic. Our games and tests for the topic use these 6 items plus 10 additional question answer pairs.
The topic "Rectangles: how much bigger" is in the category Measurements for 4th grade (ages 9 to 10).
Home / 4th grade / Measurements / Calculate & compare / Rectangles: how much bigger
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