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Common Core Standard 5.NF.B.4b Questions

Find the area of a rectangle with fractional side lengths by tiling it with unit squares of the appropriate unit fraction side lengths, and show that the area is the same as would be found by multiplying the side lengths. Multiply fractional side lengths to find areas of rectangles, and represent fraction products as rectangular areas.

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Each square of the rectangle shown has a length of $1/2$ units.
1. $1/2 xx 1/2 = 1/4$
2. $5 xx 4 = 20$
3. $2 1/2 xx 2 = 5$
4. $20 xx 1/2 = 10$