Question

complete to solve $8 + 84$.
$8 + 84$
$=(2 + \square) + 84$
$=2 + (\square + 84)$
$=2 + \square$
$=\square$

Explanation:

Step1: Decompose 8

We know that \( 8 = 2 + 6 \), so we fill the first box with 6.
\( 8 + 84=(2 + 6)+ 84 \)

Step2: Apply Associative Property

Using the associative property of addition \( (a + b)+c = a+(b + c) \), we can rewrite the expression as \( 2+(6 + 84) \). So the second box is 6.

Step3: Add 6 and 84

Calculate \( 6 + 84 = 90 \). So the third box is 90.

Step4: Add 2 and 90

Calculate \( 2 + 90 = 92 \). So the fourth box is 92.

Answer:

First box: \( 6 \)
Second box: \( 6 \)
Third box: \( 90 \)
Fourth box: \( 92 \)
Final result of \( 8 + 84 \): \( 92 \)