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3rd grade

Course: 3rd grade > Unit 10

Lesson 6: Decompose figures to find area
Math
3rd grade
Area
Decompose figures to find area
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Understand decomposing figures to find area

CCSS.Math: 3.MD.C.7, 3.MD.C.7d
Google Classroom

Problem

The figure below shows a large rectangle with a small rectangle cut out of it.
An 8-sided figure in the shape of a large rectangle with a small rectangle cut out from its top side. The large rectangle is 8 units long and 8 units wide. The space left from the small rectangle is 3 units long and 2 units wide.
Find the area of the shaded figure by subtracting the areas.
start text, A, r, e, a, space, end textequals, 64, minus
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
equals
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
start text, space, s, q, u, a, r, e, space, u, n, i, t, s, end text
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