## Wednesday, 14 January 2015

### Point to Ponder (2) What do you think?

To solve part (b) of the question, Benz applied the divisibility rule for 3

Here is Benz proposed solution for (b)

In pairs, discuss and comment if you agree with his proposed solution
• agree, indicate Yes... this is what we think, too.
OR
• disagree (with the entire working or part of it), elaborate why.
Remember to sign off with both names.

1. Yes, we agree with the solution.

2. Yes, this is what we think too. However, there are other numbers that can also be the answer, as the question asked for the possible values for x. The numbers are: 3,6 and 9

Liya and Grace.

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3. We disagree with the working as it did not list all the possible values. The other possible values are 3, 6 and 9.
-yu min shen and hodor

4. I agree and disagree with Benz. Because 0 is a possible answer but they asked for ALL possible numbers
Jerremy and alexander

5. disagree. the question ask for all possible values, thus having more than just 1 answer.
Our suggested answer is 0, 3, 6 and 9. (x+12, 0+12=12, 3+12 = 15, 6+12=18, 9+12=21. ) By Marcus and malcolm

6. We agree that 0 is a possible value but other numbers like 3, 6 and 9 also works too.

Tjin Yao and Choon Wee

7. Disagree
X can be any value as long as the total sum of all the digits is divisible by 3
Justin and Kevin

8. ÷÷÷÷÷÷÷÷÷÷÷yay÷÷÷÷÷÷÷÷÷÷÷