IM 6.5.7 Practice: Using Diagrams to Represent Multiplication

Here is a rectangle that has been partitioned into four smaller rectangles. For each expression, choose the sub-rectangle whose area, in square units, matches the expression.
Expression: [math]3\cdot\left(0.6\right)[/math][br]
Expression: [math]\left(0.4\right)\cdot2[/math][br]
Expression: [math]\left(0.4\right)\cdot\left(0.6\right)[/math][br]
Expression: [math]3\cdot2[/math][br]
Here is an area diagram that represents (3.1) · (1.4). Find the areas of sub-rectangles A and B.
What is the area of the 3.1 by 1.4 rectangle?
Draw an area diagram to find (0.36) · (0.53). Label and organize your work so that it can be followed by others.
Find the product: (2.5) · (1.4). Show your reasoning.
Find the product: (0.64) · (0.81). Show your reasoning.
Complete the calculations so that each shows the correct sum.
Diego bought 12 mini muffins for $4.20. At this rate, how much would Diego pay for 4 mini muffins? Add this to the table.
How many mini muffins could Diego buy with $3.00? Explain or show your reasoning. If you get stuck, consider using the table.
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– GeoGebra Classroom Activities, IM 6 – 8 Math

Information: IM 6.5.7 Practice: Using Diagrams to Represent Multiplication