PSLE - New Format for Maths

[Ultra KS]

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[Mandy-Alex]

Ultra KS:

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Great! The most clear explanation so far. Congrats! :celebrate:

[eddie tan]

so tough one loh!!!

:? :shock: :lol: :x :roll: :idea: :?: :!: :stupid: :love: :celebrate:

[eddie tan]

who know how to do bklt A last Q ?? wat is the correct ans?? pls reply :?:

[eddie tan]

turquoise:

The answer is 150 deg. The easiest way to get the answer is via the equilateral triangle and isosceles triangle method. Several posters have already shown how to derive the answer.


If still in doubt, draw the figure on a piece of paper, making sure you have a square, and the three lines are of the same length. Measure the angle. It's 150 deg.

cannot be measured ,not drawn to scale

[justsay]

eddie tan:

turquoise:

The answer is 150 deg. The easiest way to get the answer is via the equilateral triangle and isosceles triangle method. Several posters have already shown how to derive the answer.


If still in doubt, draw the figure on a piece of paper, making sure you have a square, and the three lines are of the same length. Measure the angle. It's 150 deg.

cannot be measured ,not drawn to scale

Yes you can if you draw to scale.

[Mandy-Alex]

eddie tan:

who know how to do bklt A last Q ?? wat is the correct ans?? pls reply :?:

Give some more clue, please!

[turquoise]

eddie tan:

turquoise:

The answer is 150 deg. The easiest way to get the answer is via the equilateral triangle and isosceles triangle method. Several posters have already shown how to derive the answer.


If still in doubt, draw the figure on a piece of paper, making sure you have a square, and the three lines are of the same length. Measure the angle. It's 150 deg.

cannot be measured ,not drawn to scale

Draw to scale. It's easy. There is only one way to draw the diagram if you follow the instructions.

[parentof3]

YGmama:

ilaks:

can anyone share with me the curry puff question?

Here you go for the curry puff Qs, however, pls note that it is not in complete sentence

Curry Puff - 80 cents each
Discount: Buy 3 get 1 at half-price
Mr x is given $50, how many curry puff can he buy?

My son told me the correct answer should be 74 not 71. Because after buying 71 curry puffs there is a balance of 240cents for another 3 curry puffs. Therefore answer should be 74.

[Joy]

thanks, if the info that it is a square is provided, this question looks more sense.thanks


rgds

James Ang:

chochipkooky:

Does anyone know whether it was clearly shown that the 4 sides were of equal length thus making it a square? If not, I agree with CrazyDad. Information inadequate.

Yes, it is a square and the information is provided that it is a square as my students have told me. That means all the 3 equal lines are the radii of the arc (incomplete circle) and that makes all the 3 lines (length of square) and all the 3 radii equal and thus the equilateral triangle.