b) Add the numbers, making the first addend up to 10.

Solution:

• 7 + 5 = 12
• Explanation: To make the first addend (7) up to 10, we need to add 3 (since 7 + 3 = 10). We take these 3 from the second addend (5). So, 5 becomes 2 (5 - 3 = 2). The problem transforms into 10 + 2, which equals 12.
• Alternatively, the image shows dots: 7 dots + 5 dots. The breakdown shows 7 + 3 = 10 and the remaining 2 from the 5 dots. So, 10 + 2 = 12.

Answer: 12