Peiyi Huang
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

P4 maths. Looks simple. But my mind jam. Pls help. Thanks.

Replies 4
Winson Siew

P=3u J=1u P-60=2u J+60=2u Huang Peiyi it isnt dat hard XD

6 years ago
Jason Oon

If giving 60 clips can make them have equal number, means Peter has 120 more clips than Jane. (ie. 60 x 2 = 120)

6 years ago
Winson Siew

^^^

6 years ago
Ah Ping

6 years ago

Jolene Koh
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Please help. 😊

Replies 9
Raymond Ng

6 years ago
Jolene Koh

Thank you

6 years ago
Jolene Koh

But how to explain?

6 years ago
Raymond Ng

Which one?

6 years ago
Jolene Koh

(a)

6 years ago
Raymond Ng

Ok. I merely used Total = Average × number of terms. Average is the middle number, so (22 + 100) ÷ 2 Number of terms can see?

6 years ago
Jolene Koh

Yes...can

6 years ago
Raymond Ng

That's it. This kind of question, once you know the trick, is as easy as ABC. Shouldn't take you more than a minute to arrive at the answer ☺

6 years ago
Jolene Koh

Ok thank you

6 years ago
Raymond Ng

Which one?

6 years ago
Jolene Koh

(a)

6 years ago
Raymond Ng

Ok. I merely used Total = Average × number of terms. Average is the middle number, so (22 + 100) ÷ 2 Number of terms can see?

6 years ago
Jolene Koh

Yes...can

6 years ago
Raymond Ng

That's it. This kind of question, once you know the trick, is as easy as ABC. Shouldn't take you more than a minute to arrive at the answer ☺

6 years ago
Jolene Koh

Ok thank you

6 years ago

Jolene Koh
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Measurement

Replies 3
Jason Oon

Area of triangle ABD = 1/2 x 28 x 27 = 378 cm2 Area of triangle CDE = 3/10 x 378 = 113.4 cm2

6 years ago
Jolene Koh

Thank you

6 years ago
Jason Oon

Some information in question are given to mislead the kids. Do guide them to look out for the appropriate information given.

6 years ago
Jason Oon

Some information in question are given to mislead the kids. Do guide them to look out for the appropriate information given.

6 years ago

Jolene Koh
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Replies 1
Yeo See Yeong

6 years ago

Jolene Koh
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Measurement

Please help. Thank u

Replies 0

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