Question

two friends were filling water balloons. the number line represents the number of balloons they each filled and the total number.
in the first box, write the number sentence represented by the number line. use b for the missing value.
then find the missing value.
b =

Explanation:

Step1: Identify the equation

The number line shows that 38 plus \( b \) equals 55, so the equation is \( 38 + b = 55 \).

Step2: Solve for \( b \)

Subtract 38 from both sides of the equation: \( b = 55 - 38 \).
Calculate \( 55 - 38 = 17 \).

Answer:

The number sentence is \( 38 + b = 55 \), and \( b = 17 \).