## Q&A - P3 Math

- Steadyberry
- BrownBelt
**Posts:**587**Joined:**Sun Mar 27,**Total Likes:**1

### Re: Q&A - P3 Math

Sorry dear parents, need solution for the question below.

Draw diagrams / Guess and Check.

There are 8 goats and ducks altogether.

Some had 2 legs and some had 4 legs.

The animals have 20 legs in all.

How many goats are there?

Thanks.

P/s: The sch teacher said to get as less as possible for the number of goats.

Draw diagrams / Guess and Check.

There are 8 goats and ducks altogether.

Some had 2 legs and some had 4 legs.

The animals have 20 legs in all.

How many goats are there?

Thanks.

P/s: The sch teacher said to get as less as possible for the number of goats.

- catddy2002
- BlueBelt
**Posts:**279**Joined:**Tue Jan 20,**Total Likes:**2

### Re: Q&A - P3 Math

GreenQ wrote:Sorry dear parents, need solution for the question below.

Draw diagrams / Guess and Check.

There are 8 goats and ducks altogether.

Some had 2 legs and some had 4 legs.

The animals have 20 legs in all.

How many goats are there?

Thanks.

P/s: The sch teacher said to get as less as possible for the number of goats.

Hi,

This is my format.

Not sure whether your child need to follow his/her teacher's format.

- catddy2002
- BlueBelt
**Posts:**279**Joined:**Tue Jan 20,**Total Likes:**2

- Maths Olympiad Tutor
- YellowBelt
**Posts:**11**Joined:**Sat Feb 23,

### Re: Q&A - P3 Math

quekcc wrote:Draw diagram.GreenQ wrote:Sorry dear parents, need solution for the question below.

Draw diagrams / Guess and Check.

There are 8 goats and ducks altogether.

Some had 2 legs and some had 4 legs.

The animals have 20 legs in all.

How many goats are there?

Thanks.

P/s: The sch teacher said to get as less as possible for the number of goats.

When we assume there are 8 goats, there will be 32 legs, 12 more than what is mentioned.

A goat has 2 more legs than a duck.

Since there are 12 extra legs, there must be 12 / 2 = 6 ducks.

8 - 6 = 2 goats.

### Re: Q&A - P3 Math

Ok here goes my method..

There are 8 goats and ducks altogether.

Some had 2 legs and some had 4 legs.

The animals have 20 legs in all.

How many goats are there?

Answer..

Assume all are ducks..

each duck-->2 legs

If 8 ducks, total legs-->8 x 2 = 16

balance legs-->20-16 = 4

these extra legs are from goats.

each goat 2 extra leg.

so number of goat-->4/2 = 2

Goat-->2

duck-->8-2 = 6..

There are 8 goats and ducks altogether.

Some had 2 legs and some had 4 legs.

The animals have 20 legs in all.

How many goats are there?

Answer..

Assume all are ducks..

each duck-->2 legs

If 8 ducks, total legs-->8 x 2 = 16

balance legs-->20-16 = 4

these extra legs are from goats.

each goat 2 extra leg.

so number of goat-->4/2 = 2

Goat-->2

duck-->8-2 = 6..

### Re: Q&A - P3 Math

Thanks mother777. My child's teacher used exactly the same method as yours!mother777 wrote:Ok here goes my method..

There are 8 goats and ducks altogether.

Some had 2 legs and some had 4 legs.

The animals have 20 legs in all.

How many goats are there?

Answer..

Assume all are ducks..

each duck-->2 legs

If 8 ducks, total legs-->8 x 2 = 16

balance legs-->20-16 = 4

these extra legs are from goats.

each goat 2 extra leg.

so number of goat-->4/2 = 2

Goat-->2

duck-->8-2 = 6..

### Re: Q&A - P3 Math

well that is good to know

the best thing about this method is that guessing is eliminated.

so once you get answer and your working is correct..then you can be sure that your answer is correct only..

the best thing about this method is that guessing is eliminated.

so once you get answer and your working is correct..then you can be sure that your answer is correct only..