Solve the Addition Equation: Finding the Missing Number in 60 + ? = 60

To solve this problem, we use the property of zero in addition. This property states that adding zero to any number does not change the value of that number. Mathematically, this is written as $a + 0 = a$.

Given the equation:

$60 + ? = 60$

Step 1: Recognize that we want the sum of 60 and the unknown to still be 60.

Step 2: According to the property, the number that, when added to 60, results in 60 must be zero. Therefore, we set $? = 0$.

The correct choice from the options provided is:

• Choice 4: $0$

Therefore, the correct answer is $0$.