Question

what multiplication is suggested by each of the models below?
(a)
image of two circles with five stars each inside a rectangle
(type an equation.)
(b)
image of a 3x5 grid of blue squares
(type an equation.)

Explanation:

Part (a)

Step 1: Analyze the model

There are 2 groups (circles), and each group has 5 stars. Multiplication represents repeated addition, so we can model this as the number of groups times the number of stars per group.

Step 2: Write the equation

The number of groups is 2, and the number of stars per group is 5. So the multiplication equation is $2\times5 = 10$ (or $5\times2 = 10$).

Part (b)

Step 1: Analyze the model

The grid has 3 rows and 5 columns. To find the total number of squares, we multiply the number of rows by the number of columns.

Step 2: Write the equation

The number of rows is 3, and the number of columns is 5. So the multiplication equation is $3\times5 = 15$ (or $5\times3 = 15$).

Answer:

(a) $2\times5 = 10$ (or $5\times2 = 10$)
(b) $3\times5 = 15$ (or $5\times3 = 15$)