Assess Readiness
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Look at the picture in Part 1. How many groups of balloons are there?
3 groups of balloons.
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How can we complete the multiplication statement?
3 groups
\times 4 in each group = 12 total -
Look at Part 2. Which expressions are equivalent? How do you know?
6\times 8 = 8\times 6 (commutative property);4\times (5\times 2) = (4\times 5)\times 2 (associative property);(2\times 3)\times 4=2\times3\times 4 (associative property);9\times 10=9\times 10\times 1
(identity property). -
Now, look at the model in Part 3. What fraction does each part of the rectangle represent? How do you know?
Each part is
\frac 18 , since there are 8 equal parts in the whole. -
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How can we write
\frac 68 as a collection of unit fractions? How many unit fraction "groups" are there?There are 6 groups of
\frac 18 :\frac 68=\frac 18+\frac 18+\frac18+\frac18+ \frac 18+\frac18 . -
How else can we write
\frac 68 as the sum of fractions that have the same numerator and denominator as each other?\frac 68=\frac 28+\frac 28+\frac 28 , or\frac 68=\frac 38+\frac 38 .
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