Solve for the Missing Number: 48 + □ = 83 Using Number Line

To solve the problem $48 + \Box = 83$, we need to find the missing value that, when added to 48, equals 83. We'll visualize this using the number line and break this addition into two steps:

• Step 1: Start at 48. For simplicity, make the first jump to 50 (an easy round number that's close to 48). This jump is $2$ units: $48 + 2 = 50$.
• Step 2: Now, calculate the remaining distance to 83 from 50. This distance is $33$ because $50 + 33 = 83$.

By taking these two jumps, first adding 2 and then adding 33, the total addition is:

Therefore, the missing addend in $48 + \Box = 83$ is $35$.