1. 1MPES2 Multiply & Divide on Ecole Supérieure de Commerce de Neuchâtel Pierre Marchal 7.09.2015 http://creativecommons.org/licences/by/3.0/ Attribute to: Pierre Marchal (Lycée Jean-Piaget)

2. Objectives of the course By the end of the course, you should be able to: – Cite and apply the sign rules for multiplication and for division – Perform any type of multiplication & division – Work comfortably with positive and negative numbers

3. Sign rule for multiplying and dividing YES NO Do the signs match ? Multiply or divide The sign is positiveThe sign is negative

4. EXAMPLES OF APPLICATION

5. Apply the rule Warning: be sure not to confuse : a problem like with. subtraction multiplication

6. PRACTICE EXERCISES

7. Practice Multiplication (4)(-1) (7)(-5) (10)(-8) (-7)(-2) (-4)(-2) (6)(-1) (9)(-4) (-9)(-7) (-5)(2) (-2)(-2) (-5)(4) (-3)(-9)

8. Practice Division

9. By the end of this course You are able to : – Cite and apply the sign rules for multiplication and for division – Perform any type of multiplication & division – Work comfortably with positive and negative numbers

10. Any question ?

11. THANKS FOR YOUR ATTENTION See you on Thursday and be ready for a test !