Rectangles Area Worksheet

Area is the number of square units that cover the inside of a flat shape, and rectangles are where every young mathematician begins. This Rectangles Area Worksheet gives 3rd grade students a clear, two-step path into that idea. First they count the unit squares that fill a rectangle drawn on a grid, so area stays something they can see and point to. Then they move to rectangles labeled only with a length and a width, where counting one square at a time is no longer practical and multiplication takes over. Making that jump, from counting squares to multiplying side lengths, is exactly what the third grade measurement standards ask for, and it is the moment area stops being a picture and starts being a formula.

This 3rd grade area worksheet is built for one focused practice session of about fifteen minutes. Part A shows four rectangles drawn on unit grids; students count the squares and write the total area on the line below each one. Part B shows four rectangles with their side lengths marked in feet, so students multiply the length by the width instead of counting. Part C finishes with two real world word problems, a rectangular garden and a pair of classroom rugs, including one comparison problem that asks students to find two areas and then work out the difference between them. Print it for morning work, guided math groups, homework, or a quick review before a unit test.

What’s Included

• 1 print-ready PDF worksheet
• Answer key
• 8 rectangle area problems plus 2 area word problems

There are three reasons this Rectangles Area Worksheet helps children learn area and hold on to it. First, it connects the concrete to the abstract in a single sitting: the same skill appears first as counted squares and then as a multiplication sentence, so students see why the formula works rather than memorizing it. Second, every answer is a whole number within one hundred, which keeps the arithmetic from getting in the way of the geometry. Third, the word problems ask students to apply area to objects they already know, gardens and rugs, so the math lands somewhere real and worth remembering.

Teachers and parents can stretch this skill well past the page. Hand students a ruler and let them find the area of a desk, a book cover, a doormat, or a floor tile. Build rectangles from square color tiles or graph paper and challenge children to find every rectangle with an area of twenty-four square units. Tape a large rectangle on the floor and have students cover it with paper squares to check their answer. Ask which is bigger, a rug that is four feet by six feet or one that is five feet by five feet, and let them prove it with a drawing.

Related Resources

• Finding the Area by Multiplying Worksheet
• Finding the Area in Total Units Worksheet
• Solving Area Word Problems Worksheet
• Rectangle Song by Have Fun Teaching