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Mastering Integer Subtraction with Rules and Examples

Learn how to subtract integers using different methods and rules with helpful examples and explanations to ace your math skills. Practice subtracting positive and negative numbers confidently. Get ready to simplify and solve equations easily.

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Mastering Integer Subtraction with Rules and Examples

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  1. Fri. 8/31 1) Simplify: 2) Simplify: 3) Show -7 + 2 using the model.

  2. 1.5 Subtracting Integers

  3. Learning Targets • LT #8: I can subtract integers. Before: 1 2 3 After: 1 2 3 1 = always 2 = sometimes 3 = not yet I have these questions: 7NS1.2

  4. LT #8 Method #1 Subtracting Integer Rules (#1) Keep the sign of the firstnumber. Change subtract to add Change the sign of the next number. Then use the rules for adding integers 5 – 6 = -1 5 – 6 Is the same as 4 – (–2) 4 – (–2) = 6 Is the same as -3 – ( 1) -3 – 1 = -4 Is the same as

  5. Learning Targets • LT #8: I can subtract integers (continued). I have these questions: 7NS1.2

  6. LT #8 Method #2 Subtracting Integer Rules Place an addition signimmediatelyafter the first number. If there are two negative signs, it means positive. Then use the rules for adding integers 5+ – 6 = -1 5 – 6 Is the same as 4+– (–2) 4 – (−2) = 6 Is the same as -3 – 1 Is the same as -3+– (1) = -4

  7. Examples (White boards) 5 + (-7) -2 -6 + (-8) -14 -9 + (+9) 0 5 + (+1) 6 -3 + (-5) + (-2) -8 + (-2) -10

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