Solve 43 - □ = 17: Two-Jump Number Line Strategy

Solve the subtraction exercise,

using two jumps on the number line below:

$43-\Box=17$

To solve the problem $43 - \Box = 17$ using a number line with two jumps, follow these steps:

• Step 1: Start at 43 on the number line.
• Step 2: Make the first jump to the nearest round number, which is 40. Thus, the first jump is $43 - 40 = 3$.
• Step 3: From 40, make another jump to reach 17. Thus, the second jump is $40 - 17 = 23$.
• Step 4: Now, add the two jumps: $3 + 23 = 26$.

Therefore, the value of the missing number is $\Box = 26$.