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Grade 7 Math Lab: The Algebraic Pivot FREE

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Adding & Subtracting Integers

50 min Grade 7 Math Lab: The Algebraic Pivot

Learning Objectives

  • Model integer operations
  • Understand additive inverse
  • Apply rules for signs

Key Concepts

Integer

Positive and negative whole numbers, including zero

Zero Pair

A positive and negative of equal value sum to zero

Theory

**Rules for Adding Integers:** - Same signs: Add absolute values, keep the sign - Different signs: Subtract absolute values, keep sign of larger **Zero Pairs:** (+3) + (-3) = 0

Examples

(-5) + (+8)

Solution: +3 (8-5=3, larger is positive)