Identify repeated addition in arrays: sums to 25
key notes :
What is an Array? 🟦🟦🟦
An array is a set of objects or shapes arranged in rows (horizontal) and columns (vertical).
Example:
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Here, 2 rows × 3 columns = 6
Repeated Addition ➕➕
Repeated addition is adding the same number again and again.
Example: 3 + 3 + 3 + 3 = 12
Arrays show repeated addition easily!
Reading Arrays for Addition 👀
Count rows and columns.
Add the number in each row or column repeatedly.
Example:
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✅ 2 rows of 5 → 5 + 5 = 10
Sums to 25 🎯
Arrays help us find sums quickly without counting one by one.
Example:
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✅ 5 rows of 5 → 5 + 5 + 5 + 5 + 5 = 25
Tips to Solve 💡
Count rows first, then columns.
Use repeated addition instead of counting all objects one by one.
Arrays can also be written as multiplication later: 5 + 5 + 5 + 5 + 5 = 5 × 5 = 25
Fun Activity 🎨
Draw your own arrays with objects like stars ⭐, apples 🍎, or balls ⚽.
Practice making sums up to 25.
Learn with an example
Which addition statement describes the array?
A} 2+2+2
B} 4+4
The triangles have been grouped by rows.
The array has 3 rows. There are 2 triangles in each row.
The addition statement that describes the array is:
2 + 2 + 2
Which addition statement describes the array?
3+3+3
4 + 4
The circles have been grouped by rows.
The array has 2 rows. There are 4 circles in each row.
The addition statement that describes the array is:
4 + 4
Which addition statement describes the array?
- 4 + 4 + 4
- 2 + 2 + 2 + 2
The ovals have been grouped by rows.
The array has 3 rows. There are 4 ovals in each row.
The addition statement that describes the array is:
4 + 4 + 4
Let’s practice!🖊️
