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Find the area of rectangles with missing unit squares

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Find the area of rectangles with missing unit squares — free printable Grade 3 math worksheet

This worksheet challenges students to find the area of rectangles that have some unit squares missing, reinforcing their understanding of area measurement. Teachers can use this resource to help students practice visualizing and calculating area in non-standard shapes, strengthening spatial reasoning and problem-solving skills. Ideal for Grade 3 math lessons on area, it supports differentiated instruction by providing medium-difficulty tasks that engage learners in hands-on area computation.

Learning objectives

  • Calculate the area of rectangles by counting unit squares, including those with missing squares
  • Identify and account for missing unit squares when determining the total area
  • Apply understanding of area concepts to solve problems involving incomplete rectangles

How to use this worksheet

  1. Select “Sign in / Sign up to download”, then sign in with Google or email to get the PDF from KiwiBee Printables.
  2. Print at home or in class for Grade 3; it's no-prep, with no extra materials needed.
  3. Hand it out as classwork, homework, or a quick warm-up.

Good for

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