A)

B)

Thanks Vivian

Thank you Raymond.

Fill the 5L pail to its brim, then fill the 3L pail to its brim using the 5L pail. The remaining volume in the 5L pail is 2L. Repeat the process and you will get 4L.

😂😂 i m correct lor TQ

But how to show the nbr equations

5-3=2 2+2=4

Oic TQ so much

There's only 2 pails. Where to contain the first measured 2l while you measure the second 2l?

Alternatively, fill the 5L pail to the brim. Then, fill the 3L pail to the brim with water from the 5L pail. Empty the 3L pail. Transfer the remaining 2L from the 5L pail to the 3L pail. There is now 2L in the 3L pail and no water in the 5L pail. Now, fill 5L pail to its brim. Then, fill the 3L pail to its brim with water from the 5L pail. You will now have 4L left in the 5L pail as the 3L pail only requires one more litre to be filled to its brim.

I think you need to fill the 3-litre pail to the brim then transfer its contents to the 5-litre pail. Fill the 3-litre pail again then pour its contents to the 5-litre pail until its filled to the brim.. Since the 5-litre pail already had 3 litres from the first transfer, you can only fill it with 2 litres which means 1 litre will be left in the 3-litre pail.. Empty the 5-litre pail then pour the 1 litre left from the 3-litre pail.. Fill the 3-litre pail again then transfer its contents in the 5-litre pail that contains 1 litre and you will have a total of 4 litres in the 5-litre pail..

Ah qiu solution shd b more easy for her to understand. Aw TQ for all your help TQ

Remind old days.... I learn it in school....

Thanks! 👍

There is yet another method. Fill the 3L pail to its brim. Transfer all the water in the 3L pail to 5 L pail. Repeat this process again. The 5L pail will be full and there will be one litre left in the 3L pail. Pour away all the water in the 5L pail, then transfer the one litre from the 3L pail to the 5L pail. Fill the 3L pail to its brim again and pour the entirety of its contents into the 5L pail. There is now 4 litres of water in the 5L pail. This method requires a total of 9 litres of water while the previous method requires 10 litres. This is therefore technically a better method.

Done by my daughter...

How do we know whether to X 2 or X 3 etc? Thanks for the great help

X 3 coz we r trying to make units of R to b equal for e 2 ratios.

The same goes to Q. We need to make e units to b equal. So have to X 3

Ok I see thank you Tricia.

Big thanks to Jessie and Jessie's daughter!

U welcome

🔼 stands for 4. Each of the horizontal and vertical line needs to add up to 20.

Thanks all! It is elementary after all.

Yes. This is a p2 question which combines "looking for patterns" and "addition" topics

12 +5+3=20 1+6+13=20 7+9=16 20-16=4 12+1+7=20 5+6+9=20 3+13=16 20-16=4 The answer is 4. By Isabelle and Sophie, P2.

4

4

All add up to 20. So its 4

Yes, ans is 4

Think simple

Good reminder. 😂 need to get out of P5 Maths mentality. Thanks all.

4

4

4

4... Total add up to 20

P2 .. addition and subtraction mostly.

4

Ans is 4. All rows and columns of numbers add up is 20.

4

Ans : 4 (16+4=20).😀

4

Every row and every column has a sum of 20 Therefore 3+13+∆=20 => ∆=20-16=4