Question

problem 1
select the number line that represents $5 \cdot (-3)$.
you can think of $5 \cdot (-3)$ as 5 groups of $-3$.

Explanation:

Step1: Interpret the multiplication

$5 \cdot (-3)$ means 5 groups of $-3$. On a number line, moving left represents negative values.

Step2: Match to number line

The first number line shows 5 groups of $+3$ (rightward moves), which represents $5 \cdot 3$. The second number line shows 5 leftward moves of 3 units from 0, which matches 5 groups of $-3$.

Answer:

The bottom number line (with 5 leftward jumps of -3 starting from 0)