Solve the Equation: Finding the Missing Number in 46-□=39 Using Number Line

To solve this problem, we'll follow these steps:

• Step 1: Identify the problem as requiring the unknown number such that $46 - \Box = 39$.
• Step 2: Choose the nearest higher round number above 39, which is 40.
• Step 3: Calculate the number for the first jump from 46 to 40.
• Step 4: Calculate the second jump from 40 to 39.
• Step 5: Add the values of both jumps to determine $\Box$.

Now, let's work through each step:

Step 1: We start at 46 and the subtraction ends at 39, making $46 - \Box = 39$.

Step 2: The first jump brings us to the nearest round number, 40.

Step 3: The value of this first jump is $46 - 40 = 6$.

Step 4: The second jump brings us from 40 to 39, which is $40 - 39 = 1$.

Step 5: Adding both jumps, $6 + 1 = 7$.

Therefore, the solution to the problem is $\Box = 7$.