Question

complete to solve $4 + 56$.
$4 + 56$
$= 4 + (\square + 50)$
$= (4 + \square) + 50$
$= \square + 50$
$= \square$

Explanation:

Step1: Decompose 56

We know that \( 56 = 6 + 50 \), so we fill the first box with 6.
\( 4 + 56 = 4 + (6 + 50) \)

Step2: Apply associative property

Using the associative property of addition \( (a + b) + c = a + (b + c) \), we can rewrite the expression as \( (4 + 6) + 50 \). So the second box is 6.

Step3: Add 4 and 6

Calculate \( 4 + 6 = 10 \). So the third box is 10.

Step4: Add 10 and 50

Calculate \( 10 + 50 = 60 \). So the fourth box is 60.

Answer:

First box: 6, Second box: 6, Third box: 10, Fourth box: 60 (And the final result of \( 4 + 56 \) is 60)