Question

What model can you use to represent 2⋅5 ?(1 point) +

Answer 1

To represent the multiplication \(2 \cdot 5\), you can visualize it using various models. Here are a few examples:

1. **Arrays**: You can represent \(2 \cdot 5\) as an array of items, where you have 2 rows with 5 items in each row. This gives a total of 10 items.

```
Row 1: O O O O O
Row 2: O O O O O
```

2. **Area Model**: You can visualize it as a rectangle where one side measures 2 units and the other side measures 5 units. The area of this rectangle is \(2 \cdot 5 = 10\).

3. **Repeated Addition**: You can think of it as adding 2 five times:

\[
2 + 2 + 2 + 2 + 2 = 10
\]

4. **Number Line**: You could also use a number line to represent the addition of 2, five times starting from zero:

- Start at 0, jump to 2 (first jump), then to 4 (second jump), then to 6 (third jump), then to 8 (fourth jump), and finally to 10 (fifth jump).

These models can help in understanding the concept of multiplication as repeated addition or as an area calculation.