−2 − (−3) = Write as an addition problem by adding the opposite. _____ + _____
Find the sum using the number line: _______
To write −2 − (−3) as an addition problem by adding the opposite, we need to change the subtraction of a negative number into addition. The opposite of a negative number can be obtained by changing the sign.
So, for −2 − (−3), we can rewrite it as −2 + (+3). Now, we have two numbers that we can add together: −2 and +3.
To find the sum using the number line, we can represent each number on a number line and then combine them.
1. Start with a number line and label it with the numbers from -3 to +3.
2. Place a dot on the number line at -2. This represents the starting point.
3. Move to the right on the number line by 3 units, since we are adding +3.
4. The point where you end up is the sum.
The sum of −2 + (+3) on the number line is +1.