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Mr Lee, i really have searched everywhere and i cant find my 'speed' worksheet. Is it ok if ibought the 6b book and redo 'speed' and hand up on thursday? since maths on wed is before recess

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For this question, answer should be 192. Look at the 12th triangle at the base... It will leave a 1cm gap which allow an inverted triangle to be formed at the top, hence for each triangle at the base, you can form another inverted triangle on top. So this is the answer.

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Hello Mr Lee,
Could you please help me solve this question? Thank you!

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Hello Mr Lee,
I needed to clarify whether what I did is correct since the answer key suggests that the answer is 192 while my answer is 184. Thank you!

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Hmm, I didn't notice that. Thanks!

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Hey guys, i would like to point out that there is an error for practise paper set L, paper 1. As you can see, they did not state the length of the sides of the square/quarter circle, nor the value of pi, hence making the question unsolveable.

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Yup, that’s it.

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Soo... half of the rectangle is the semicircle?
then the whore rectangle will be 1 circle... right?
Yes, I think I got it... Yaaaay...

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Hmmm... okay.

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Hi, pranaya! So for your question, we can see that half the rectangle is equal to the area of semicircle minus one unit plus one unit which is actually just the area of a semicircle.I think you can figure out from there.

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Mr Lee, I don't know how to do this question which is from
a worksheet containing Higher Order Thinking Skills questions.
Will this type pf questions appear in PSLE?

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Thank you

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Dear Mr Lee, how do I do this question? Thank you.

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When are we gonna go through math practice paper set c?

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Thank you!

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How do i do  q9,11 and 15 for the Math Practice Paper Set C paper 2?

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Thank you for the feedback, Mr Lee

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Remember you can't divide area of rectangle by area of triangle. Think of laying the triangles in 2 different ways on the rectangular block. Your answer will still be 106.

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Orientation 1
53÷3=17R1
17×3=51
51×2=102
Orientation 2
53÷4=13R1
12÷3=4
13×4×2=104
Using area: 53×12=636
Area of triangle:4×3÷2=6
636÷6=106                       Ans:106

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I came across this interesting question. All of you can try to solve it. Hint: It might not be the usual way that Mr Lee used to teach you.

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Himansha participated in a Math competition. For each correct answer, he score 4 marks. For each incorrect answer, 2 marks will be deducted. If there are 30 questions in the competition and Himansha scored a total of 72 marks. How many questions did he answered incorrectly?

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Thanks for notifying the class about this Jeanne. I will upload the video link again as YouTube unlisted. Give me a few minutes.

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Can all of you access the zoom recording that Mr Lee uploaded on the class website? It needs me to sign in to a zoom account which I don't have yet. Do any of you have the same problem?

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Hello Mr Lee, sorry to disturb on the weekend. Can you send me a assumption question where the subtraction is addition, thank you M
r Lee

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Ok, thank you Mr Lee!

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If you are referring to the Practice Paper paper 1. There is a mistake in one of the mcq question. The option available is 45% which should be an error.

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Please refer to class website for the dates.

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Mr Lee, is there a problem with this question? I keep getting the answer as 40% but there is no such option.

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When is our maths and science tests?

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No.

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Is the construction of angles(drawing)in the maths test in week nine?

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Is the answer correct for this question?

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Good morning Mr Lee. I hope you are having a happy holiday. I have started revising the chapters you put up on SLS. Now I am doing circles and I wanted to see that video of the introduction to circles. However, it is not on SLS anymore. So I hope you can post that video please.

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How do we calculate our overall marks for mathematics?

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Mr Lee already posted the notes! It is under math resources

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Mr Lee, when are you going to post the math notes for today's lesson?

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Thank you Mr Lee

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$60 should be the right answer!

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Dear 5 Faith, please note that Area of triangles and Quadrilaterals are both excluded from SA2

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The answer 180 is actually wrong. 180 is the total amount of money the boys have altogether. The answer is 60.

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Mr Lee, can you pls advice why the answer is $180. Thank you

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In the Mathematics SA2 schedule,it says that area of triangles are excluded from SA2. However, you only mentioned that quadrilaterals were excluded from SA2.

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Hello Mr Lee. Could you please post the learning slides for the second semester's topics like how you have posted for the first semester ones? It helps to re-revise on points we might have missed when you were teaching and also we don't have worry about missing out on things. Could you please post them if possible? It would be great if it can be done. Thank you very much.

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I know that was exactly what i said.

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Sorry for disturbing but I have questions regarding the Semestral Review you assigned us today;
On page 195, question 4 and page 197 question 11, they state that the quadrilateral below is a rhombus, but instead of marking out the lines that are of some length, they marked out the parallel lines on opposite sides. Therefore, I thought that it's a parallelogram instead of a rhombus. Please explain about this tomorrow.

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Is this an composite figure that we learnt today?

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I see. I will just put 8

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yes, im pretty sure that the answer is $8

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The answer is $8 right?

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Just $2

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I just wanted to clarify, does the after 5. p.m mean $2 per 1/2 hour(like the $1) or just $2

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Thank you i will go and check the question again. I thought we are suppose to count between the years.

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Ding Xun, you need to read the question properly. 2012-2016 is 5 years, not 4. It even says on the graph. All you have to do is find the average of the rental rates throughout the 5 years.

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Yip Ding Xun to Anyone who has finish their review 2

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Yip Ding Xun to Anyone who has finish their review 2

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For our math review 2 I don't understand why this question they put what was the average monthly rental rates over the 5 years. When the graph clearly shows only 2012 to 2016 where the its total is only 4 and does not show the other one year.

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Noted, thank you for informing us Mr Lee

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Thank you for the update Mr Lee

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System error. 0.86 is correct

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Yes, I too have the same problem.

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Dear Mr Lee,  can I know why is this question marked incorrect.

Thank you!

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Not sure whether this will be clearer for the average question. I will explain to everybody again on Monday

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Hi Mr Lee, could you help me with this question in the Average topical worksheet? Thanks!

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Sure. I will pass it to the class next week.

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Hello Mr Lee. You have given us many things to file but we have received the checklist papers for the recent ones. For example, for our Fractions workbook worksheet, there was a checklist to tick to track if we have all our sheets. Could you please pass these to us as soon as possible.

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Mr Lee, I was checking if there was a shaping maths area of triangles answer key. There isnt. Can you upload it please. Thank you.

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I was about to list down all the worksheets I have missing but just checking; were we supposed to file the math file again because we don't have the checklist paper.

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I still can't find those worksheets. I've searched almost everywhere.

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You told me to search for the worksheets in my broken file but I couldn't find anything except supplementary worksheets

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Since there is 2 change. You must use units and parts for this question.

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The question say there is less than 5 5cent coins so the best guess would be 3 because it would then give you a whole number for the 20 cent coins.

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Sorry to disturb you on a weekend but I came across a question in my assessment book that I did not know how to do could you please help me

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If the Chinese CA is on Week 6 and Science CA on Week 7 then when is Maths CA because I heard Week 8 is a holiday

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Is the next step guess and check?

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Can someone please tell me what is the Math homework for today. Thanks

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I just remembered that in week 1, I had given you the Shaping Maths Ratio worksheet as it was in my file. I believe it is with you. Sorry for your trouble.

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Ok. Thank you!

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The question is actually correct. Since the question tells you to put in 1-cm cubes, only 2 cubes can fit in the breadth, which is 2.5 cm. 12 cubes can fit in the length which is 12 cm. 5 cubes can fit in the height, which is 5 cm. Therefore, the answer would be 12 x 2 x 5=120.

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Dear Mr Lee,
I am very sorry to bother you now.I just wanted to tell you that for question 2 in math mock paper 2, in the question, the number is 2.5 but in the answer key, they used the number 2. Kindly advise. Thank you! (Navya, refer to Askhat's explanation - Mr Lee)

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Sorry to bother you. I was just going through the mock paper answers and then I noticed that the answer for Question 14 in (Mock paper) paper 2 was missing the units for mass. Hope you can look into the matter.  (Yes, please include the units Akshat - Mr Lee)
Noted-Akshat

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my mock paper is with you

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I did everything

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Are we supposed to file the Practice Papers or not?

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Hello Mr Lee I have two practise paper 1 with me i do not have the paper 2

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I never saw anything about doing mock paper.I guess I have to do it now.

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You are supposed to complete both mock and practice papers (paper 1 and 2 for both)

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sorry mr Lee for the bad typing I am lagging a lot so ya thank. You for helping me.

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Kaden to melee that question I posted was me can. U help me with that question I posted thank you.

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Kaden to melee that question I posted was me can. U help me with that question I posted thank you.

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Help with this question pls paper 2 math mock paper pg 6 (please retake a photo it is unclear)

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both.........probably

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i dont have my 5a activity booklet with me and my semestrel review (you should check for it during the last day of school, it should be with you if not in class - Mr Lee)

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Mr Lee, do we only need to do the Math practice paper? Or we need to do both the practice paper and the mock paper?

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Yes, we can do both Practice and Mock Papers, so it's fine.

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Can we do both Maths Mock and Practice papers if we have time? I did it and I do not know if we should. Please reply as soon as possible. Thank you 😊

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First of all, you made a careless mistake in your area of triangle ABE. It should be 600?
Next, recall what Mr Lee taught about area of triangle is the same as area of half rectangle. So purple shaded = green shaded and blue shaded = yellow shaded. So area of rectangle is simply area of triangle ABE x 2

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Anybody help a poor boy.😢😢😢

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Ohh, I see. Thank you Mr Lee!