Perimeter: Count the Unit Segments
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Perimeter: Count the Unit Segments
Perimeter for Grade 2: four rectangles on a grid to find the perimeter of by counting unit segments, then five rectangles and a square given by their sides. With an answer key.
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Teach it first
Perimeter: the Distance AroundA teaching handout to hand out before this sheet: the rule, worked examples and common mistakes.- Pages
- 1
- Last updated
- Time
- About 15 minutes
- Answer key
- Included
- Goes with
- Perimeter: Count the Units
- Printing
- Black and white
- Related curriculum
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Find the area of a rectangle by counting unit squares and then by multiplying its length and width, find its perimeter by adding its sides, find a missing side, and find the area of shapes made of rectangles.
Reviewed by Ms. Olivia Parker, Teacher. How we check worksheets
How to use this sheet
- Have the child trace the outside of the shape with a finger for perimeter, and shade the inside for area.
- Ask the child to write the units each time: cm for perimeter, square cm (cm²) for area.
- For composite shapes, have the child draw a line to split the shape into rectangles first.
Common mistakes
- Mixing up area and perimeter. Perimeter goes around; area covers.
- For perimeter of a rectangle, adding only the two sides shown. A rectangle has four sides.
- Missing the sides with no number on a composite shape. Work out each missing side first.
