Arrays — Multiply & Divide Pathway
What is an array?
- An array is objects arranged in rows and columns.
- Rows go across. Columns go down.
- 3 rows of 4 means 3 x 4 = 12 objects.
- Arrays help us see multiplication as a picture.
Example: A 2 x 5 array
- Step 1: Draw 2 rows.
- Step 2: Put 5 objects in each row.
- Step 3: Count all: 5 + 5 = 10.
- Answer: 2 x 5 = 10.
Your turn
- Picture a 4 x 3 array.
- 4 rows, with 3 in each row.
- Count: 3 + 3 + 3 + 3 = 12.
- So 4 x 3 = 12.
Common Mistakes to Avoid
- Confusing rows and columns. Rows go across (horizontal), columns go down (vertical).
- Counting objects one by one instead of using multiplication. If the array is 3 x 4, you can count 4 + 4 + 4 = 12 or 3 + 3 + 3 + 3 = 12.
Real-Life Example
A tray of muffins has 3 rows with 4 muffins in each row. That is a 3 x 4 array: 3 x 4 = 12 muffins.
Extra Support Hints
- Draw dots in rows and columns to make arrays you can see.
- Turn the array sideways — the total stays the same. 3 x 4 = 4 x 3 = 12.