Pick a vocabulary word and write the definition. Chapter 3

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Presentation transcript:

Pick a vocabulary word and write the definition. Chapter 3 Bell work – 5 minutes Pick a vocabulary word and write the definition. Chapter 3

Title of Notes: Adding Integers pg. 6 & 7 RS

Addition Rule To add integers with the same sign, add their absolute values. The sum is: Positive if both integers are positive Negative if both integers are negative 7 + 3 = 10 -7 + (-3) = -10

Use counters to add 3 + 4 = ?. ANSWER = 7

Use counters to add -2 + -4 = ?. ANSWER = -6

Addition Rule To add integers with a different sign, subtract their absolute values. The sum is: Positive if the positive integer’s absolute value is greater Negative if the integers are negative 7 + (-3) = 4 -7 + 3 = -4

Addition Rule To add integers with different signs: You are finding the difference even though it is an addition problem. Keep the sign of the bigger number 9 + (-3) = 6 -7 + 3 = -4

Use counters to add - 2 + 4 = ?. ANSWER = 2

Use counters to add -1 + 3 = ? ANSWER = 2

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