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Wednesday, December 12, 2012

Rina's Scribe Post

4. Jasmine said that she did not need any integer chips to multiply 0 x (+2) or to multiply (-3) x 0. Explain her thinking. 

That is true because even if you used negative signs or positive signs, as long as there's a 0, you'll still get the answer of 0. About the integer chips, you won't need it. If you used 0 x (+2), that is 0 groups of 2. So then how do you draw "0" groups? You can't. For example, this can't be right:

5. Write each repeated addition as a multiplication.

a) (+1) x (+1) x (+1) x (+1) x (+1) = (+1)

b) (-6) x (-6) = 36

9. What multiplication statement does each set of diagrams represent?

(+2) x (+4) = (+8)

(+2) x (-4) = (-8)

18. Does doubling an integer always result in an integer of greater value? Explain.

Sometimes it can. If it was a negative, it would either go high or less if you saw it being represented on a number line.


  1. Good job Rina! I really like your pictures, because they are clear and I could understand them. But, maybe add a video and a link of integers as well!

  2. Good job Rina! I like your pictures, because I could understand them and they're clear. But, maybe add a video and a link to integers as well!