2. Lesson 1: Solving Multiplicative Comparison
Problems Using Area and Perimeter
Tommy’s dad is teaching him how to make tables out of tiles.
Tommy makes a small table that is 3 feet wide and 4 feet long.
How many square-foot tiles does he need to cover the top of
the table? How many feet of decorative border material will
his dad need to cover the edges of the table?
3. Example 2
Christine painted a mural with an area of 18 square
meters and a length of 6 meters. What is the width of
her mural? Her next mural will be the same length as
the first but 4 times as wide. What is the perimeter
of her next mural?
4. Example 3
Sherrie’s rectangular garden is 8 square meters. The longer side
of the garden is 4 meters. Nancy’s garden is twice as long and
twice as wide as Sherrie’s rectangular garden.
5. Lesson 2: Interpret and represent patterns when multiplying by
10, 100, and 1,000 in arrays and numerically.
Example:
5× 10 = _______
5 ones × 10 = _____________
6. Lesson 3: Multiply multiples of 10, 100, and 1,000 by single
digits, recognizing patterns.
7. Lesson 4: Multiply two-digit multiples of 10 by two-digit multiples of
10 with the area model.
9. 40 x 50
To check using the place value
chart, it will look like this:
Or
10. Lesson 5: Use place value disks to represent two-digit by one-
digit multiplication.
Model and solve 4 ×54.
11. Represent 2 × 23 with disks. Write a matching
equation, and record the partial products
vertically.
12. Lesson 6: Extend the use of place value disks to represent three- and
four-digit by one-digit multiplication.
Represent 2 × 324 with disks. Write a matching
equation, and record the partial products
vertically.