Using Number Lines to Subtract Integers
- To add positive integers, move towards the right on a number line.
- To add negative integers, move towards the left on a number line.
- To subtract integers, add their opposites.
- Start at the first number (the minuend) and move to the left for each unit of the second number (the subtrahend). For example, if you’re subtracting -3 from 4, start at 4 and move 3 units to the left.
- Label the endpoint of the distance you traveled with the difference. So in the example above, the difference would be labeled as 1.
- Write the difference as the solution to the subtraction problem. In this case, the solution would be 4 – (-3) = 1.
Using Number Lines to Subtract Integers – Example 1
Using Number Lines to Subtract Integers – Example 2
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Original price was: $109.99.$54.99Current price is: $54.99.
Original price was: $114.99.$54.99Current price is: $54.99.
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