Perimeter of Rectangles Worksheets for 3rd Grade

What your child practices

Perimeter of Rectangles is a key 3rd grade math skill (Grade 3 in Canada), and these 50 worksheets add up to 500 questions of practice. In grades 3 to 5, math moves from counting to reasoning, so confidence with Perimeter of Rectangles pays off later in multistep problems, measurement and early algebra. Each of the 50 versions of Perimeter of Rectangles has new questions, so your child can repeat the skill without memorizing answers. It is aligned to Common Core 3.MD.D.8, which focuses on measuring, telling time, money and reading data. In Canada it matches the BC curriculum for Grade 4. Answer keys sit on page 2 of each PDF, so checking takes seconds. New to the idea? Watch the Perimeter of Rectangles video lesson, then print a sheet while it is fresh.

Tips for parents

• Encourage your child to show their work. In grades 3 to 5 the method matters as much as the answer.
• Turn one problem into a real life question, using snacks, coins or toys around the house.
• Ask your child to explain one answer out loud. Talking through Perimeter of Rectangles shows you where the thinking is solid.