Tan Weiqiang
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

This question does not involve the use of models. Instead, it makes use of another heuristics skill, the guess and check method. Have a look!

Replies 0

Maya Tharangani
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Help pls! TIA...

Replies 0

Maya Tharangani
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

Replies 4
Shaoyang Brandon

Hi. The following information "3 schoolmates did not turn up" means that 8 x 3 - 4 = 20 (tarts) became the 'extras'. Since each of Mrs Tan's schoolmates received 3 MORE tarts than before, AND Mrs Tan also has 5 more tarts left, This means the following: 3 x (Number of schoolmates that attended the party) + 5 = 20 Number of schoolmates that attended the party = :) Number of invited schoolmates = :) + 3 Once you solved (a), you can use this answer to solve (b).

6 years ago
Judy Low

May I know which level of Math is this? P4 or P5?

6 years ago
Maya Tharangani

It's p4 😊

6 years ago
Judy Low

Thanks, Maya. Not easy. Haha.

6 years ago

Maya Tharangani
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

Replies 1
Shaoyang Brandon

Hi. You can try the steps below. Increase of mass of salt per box: 2kg mass of salt needed for the 2kg increase: 5kg + 3kg = 8kg Number of boxes needed for the 2kg increase: 8kg / 2kg = 4 4 x 10kg + 3kg = 43kg (amount of salt in factory) :)

6 years ago

Maya Tharangani
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Measurement

Replies 2
Shaoyang Brandon

Hi. For (a), divide 162 by 6 to find the area of one rectangle for (b), Let the breadth be one unit. 3 units x 1 unit = 162/6 1 unit x 1 unit = 162/6 x 1/3 1 unit = :) I think you can find the perimeter from here onwards. :)

6 years ago
Raymond Ng

6 years ago

About

Students

Tutors