Question

lou wants to make 96 + 56 easier to solve in his head. he decides to add on from 96 to get to 100 first.

+ ?
←
96 100

add on to get to 100.
96 + 4 = 100

how much more does lou need to add on?
96 + 56
=96 + (4 + ?)

Explanation:

Step1: Analyze the addition to 100

We know that \( 96 + 4 = 100 \), and we want to express \( 56 \) as \( 4 + x \) to use the associative property of addition.

Step2: Solve for \( x \) in \( 56 = 4 + x \)

To find \( x \), we subtract 4 from 56: \( x = 56 - 4 \).
Calculating \( 56 - 4 \), we get \( 52 \). So \( 56 = 4 + 52 \), which means the missing number is 52.

Answer:

52