In the SCN example, what is the sum of 5 and 5?

In the SCN example, what is the sum of 5 and 5?

• A. 10
• B. 9
• C. 11
• D. 12

Answer: (A)

Adding two numbers is about combining quantities. When you put five items with another five items, you get ten items. A quick check is doubling: 5 + 5 equals 2 × 5, which is 10. So the total is 10. The other options would give totals of nine, eleven, or twelve, which don’t match 5 + 5.

Adding two numbers is about combining quantities. When you put five items with another five items, you get ten items. A quick check is doubling: 5 + 5 equals 2 × 5, which is 10. So the total is 10. The other options would give totals of nine, eleven, or twelve, which don’t match 5 + 5.