方 强
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Replies 4
Yeo See Yeong

6 years ago
Kwang Huang Sim

Hope this help.

6 years ago
Chris Rogers

If you note that in this particular question we are dealing with fractions / percentages / decimals / ratios, we can solve using ratios (units) making it more efficient. I would teach at first with a model and for those students who are comfortable they can try this too .... J : R 1 : 1 (End is the same) 3 : 3 (R gave 2/5, so R left with 3/5) 1 : 5 (J gave back 2u to R) 3 : 15 (J gave 2/5, J left with 3/5) 5 : 13 (R gave 2u back to J) 8u = 144 1u = 18 J at first: 5 x 18 = 90

6 years ago
Izam Marwasi

Chris Rogers.. I like your working.. though not all kids may understand.. Working by ratio is less messy comparing to models method and also less time consuming...

6 years ago

方 强
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Replies 2
Serene Khoo

Follow

6 years ago
Mian L. Hm

Q17 - 2/5?

6 years ago

Tay Ling
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

P5 qn. Please help. Thanks.

Replies 4
Pauline Vong Nyit Li

I'm not an expert. Just trying out, out of curiosity ! Hope it's correct and helps 😊

6 years ago
Raymond Ng

6 years ago
Tay Ling

6 years ago
Kwang Huang Sim

6 years ago

Raju Patil
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Can someone help with this P5 problem? Thanks in advance!

Replies 3
Michelle Ng

Unitary method. 5 units= 285-120=165(extra units comparing B and C is 5 units; extra quantity is 165) 1 unit=165÷5=33 (B) Total for A,B&C: 285+33=318 Average of A,B&C: 318÷3=106

6 years ago
Raju Patil

Thanks Michelle!

6 years ago
Vera Koh

model.. working is the same as michelle's. :)

6 years ago

Hani Campbell
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Fractions

Replies 1
Pauline Vong Nyit Li

I'm not an expert but was just curious to try out if my answer and workings are correct.. Sorry if it's wrong ! Anyone can confirm it please ? Thanks.

6 years ago

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