Chapter 4 Negative Numbers. Learning Objectives Order numbers Subtracting a larger number from a smaller number Adding negative numbers Subtracting negative.

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Presentation transcript:

Chapter 4 Negative Numbers

Learning Objectives Order numbers Subtracting a larger number from a smaller number Adding negative numbers Subtracting negative numbers Multiplying negative numbers Dividing negative numbers

Directed Numbers

Directed Numbers Adding/ Subtracting Note: Move up and down number line. If two signs side-by- side replace with a single sign. If signs different replace with – If signs same replace with + Examples (-6) 2.30 – – – (-6) (+3) + (-9)

Directed Numbers Multiplying/ Dividing Note: Do sign 1 st - if signs same answer is positive - if signs different answer is negative Then do multiplication/ division Examples 1.(-7) × (3) 2.8 × (-10) 3.(-5) × (+3) × (+4) 4.(+24) ÷ (-3) 5.(-30) ÷ (-6)