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Presentation transcript:

*Don’t forget to sign in!* Sketch/Illustrate 2/3

Agenda: Exam comments After the exam… Making some connections

Agenda: Opportunity Fraction practice

Symbols Why do we use a X b for multiplication? Why do we switch to a b for multiplication? Why do we use c ÷ d for division? Why do we switch to c / d or for division? cdcd

What is “cancelling”, really? Use cancelling to solve the following: 6000/20 = 152/8 = 345/5 =

Using our description of cancelling above solve: (20 + x)/20 =

What is “cancelling”, really? Revise our description: 152/8 == (160 – 8)/8 = 345/5 = = ( )/5 =

And a connection 22 ÷ 7 = 3 R 1 means 22 = 7  How are these related?

5 ÷ 3 = 1 R 2 means 5 = 3  ÷ 12 = 1 R8 means 20 = 12  1 + 8

Explain why 5 ÷ 3 = (5 4) ÷ (3 4) without doing any calculations