Question

elijah has a goal to do 80 jumping jacks. use the double number line to find 50% of elijahs goal.
jumping jacks
0
80
0%
50%
100%

Explanation:

Step1: Understand the goal

Elijah's goal is 80 jumping jacks. We need to find 50% of 80.

Step2: Use percentage formula

50% is equivalent to $0.5$ or $\frac{1}{2}$. So, calculate $80\times0.5$.
$80\times0.5 = 40$.
Alternatively, using the double number line: 100% corresponds to 80, so 50% (half of 100%) corresponds to half of 80, which is 40.

Answer:

40