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Subtracting Integers |
| Objective: To subtract integers. |
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Vocabulary: Integers, Difference |
| Subtraction is the opposite of addition. The result of subtraction is called the difference. |
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Rules For Subtracting Integers To subtract one integer from another: 1. Change the sign of the number to be subtracted (the second number). If the second number is positive, make it a negative. If the number is negative, make it positive. 2. Add the first number to the changed second number. Follow the rules of addition.
In other words, to subtract, add the opposite.
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| Example:
Subtract 18 - (-15) =
Step 1: Change the sign of the number to be subtracted ( the second number). (-15) becomes 15
Step 2: Add the first number to the changed second number. 18 + 15 = 33
The answer is 33.
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On Your Own |
| +11 - -8 = | -9 - +14 |
| -13 - +5 = | +6 - +9 = |
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Test your skills by taking the Subtracting Integers Quiz. Please remember to as Ms. Painter for the log in Password. Then click on Adding Integers Quiz
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| +19 | -23 |
| -18 | -3 |
