pri 3 maths

avg is p5

Sad to say, I can't even solve it.

I remember my primary school life is about fractions and counting cubes, measuring area.

Since it is MCQ just sub the 4 answers and see which one fits lor .

Total marks of all the girls

77 x 15 = 1155

Avg score of all children

Let y be the number of boys

(1155 + 65y)/15+y = 70

1155 + 65y = 1050 + 70y

105 = 5y

y = 21

Total marks of all the girls

77 x 15 = 1155

Avg score of all children

Let y be the number of boys

(1155 + 65y)/15+y = 70

1155 + 65y = 1050 + 70y

105 = 5y

y = 21

primary school cannot use algrebra!

Other than algebra, what can I use ? =="

Just learn in advance also can ... ALL ARE MATH!

Other than algebra, what can I use ? =="

Just learn in advance also can ... ALL ARE MATH!

Good luck explaining algebra to a p3 kid.

77 - 70 = 7

7 x 15 = 105

70 - 65 = 5

105/5 = 21

21 boys

Good luck explaining algebra to a p3 kid.

algrebra is the most challenging thing in mathematics....

you mastered it can go advanced, which is algrebra again.

What's the use of learning? Algrebra cannot apply to real life.

We should learn how much money is needed to buy HDB.

algebra is just using alpahbets to represent a value

if u dont like it, u can always change to using bananas and elephants to represent