Firdaus Omar
Asked 9 years ago

SG chevron_right Primary 3 chevron_right Number and Algebra

Help needed please

Replies 1
Ban Har Yeap

Ask the child if he knows how much petrol is used in May and June (he should subtract). Then ask him to draw a model for May and June (3 units and 1 unit). That should lead you to the answer.

6 years ago

Mavis Lim
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Thanks in advance

Replies 3
Xavier Sng

Initial ratio of numbers of apples to oranges = 3 (150%) : 2 (100%) There were 876 apples and 584 oranges bought on Monday. Oranges left on Thursday = 584 - 50 = 534 Final number of apples = 534 × 5/3 = 890 890 - 876 = 14

6 years ago
Mavis Lim

Thanks u very much

6 years ago
Xavier Sng

A pleasure to help. Regards

6 years ago

Mavis Lim
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Measurement

Thanks in advance

Replies 1
Xavier Sng

1/4 × 16 × 16 = 64 square cm

6 years ago

Mavis Lim
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Thanks in advance

Replies 1
Xavier Sng

After 3 hours, Raju was 69km + 3 × 15km = 114 km from town B which is 2/7 of the distance between towns A and B. Raju's speed was (114 × 5/2)km ÷ 3h = 95 km/h

6 years ago

Jane Lee
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

P4 Question. Pls help as my son answer is different. TIA!

Replies 8
Xavier Sng

($25 + $1.50 + $1.00) ÷ 5 = $5.50

6 years ago
Xavier Sng

The average of Friday's and Wednesday's savings is equal to Thursday's. Monday's and Tuesday's savings were $1.50 (Thursday is three days later) and $1.00 (Thursday is two days later) less than Thursday's saving respectively.

6 years ago
Jane Lee

Thanks Xavier Sng, but I don't really get it. How to relate this in model?

6 years ago
Izam Marwasi

Jane Lee..Illustration

6 years ago
Xavier Sng

6 years ago
Jane Lee

Thanks Xavier Sng & Izam Marwasi! We were only using the Friday bar for calculation, ignoring the rest of the days.

6 years ago
Xavier Sng

A even speedier way is to find the average of the five days, meaning Wednesday's savings, which is $25 ÷ 5 = $5. Thursday's savings is thus $5 + $0.50 = $5.50

6 years ago
Xavier Sng

You are most welcome, Jane. Regards

6 years ago

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