Which model best represents the expression 2(-4)? On a numberline. PLease explain simple little kid words
- Answer: -8
To represent the expression 2(-4) on a number line, we need to understand that multiplying a number by a negative value will make it go in the opposite direction on the number line.
So, we start at zero on the number line. The number 2 tells us that we need to take 2 steps, but the negative sign (-) tells us to take those steps in the opposite direction.
Since the number is -4, we take 2 steps to the left on the number line. Each step is 1 unit, so we move 2 units to the left.
Starting from zero, we move 1 unit to the left, and then another 1 unit to the left. Counting backwards, we end up at the number -2.
Therefore, the expression 2(-4) on the number line is represented by the point -2. But, we have to remember that multiplying a positive number by a negative number gives us a negative result. So, the final answer is -8.
To understand which model best represents the expression 2(-4) on a number line, let's break it down step by step using simple words.
Step 1: Start with the number 2. This represents one unit on the number line.
Step 2: Multiply 2 by -4. When we multiply a number by a negative number, it means we have to move to the left on the number line.
Step 3: To figure out how far to move to the left, we look at the number that we multiplied by -4, which is 2.
Step 4: Since we multiplied by -4, we need to move 4 units to the left on the number line.
Step 5: So, starting at 2, we move 4 units to the left, which means we end up at -8 on the number line.
Therefore, the best model representing the expression 2(-4) on a number line is the point or position that is labeled as -8.