# Multiplying Large NumbersWatch

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#1
I'm taking the IGCSE Maths next year and I'am starting from the basics. At the moment I'm multiplying large numbers and there is one or two ways in doing this. One is with cross and vertical multiplication but I prefer the usual way does anyone else?
0
5 years ago
#2
Isn't IGCSE an all calculator GCSE?
0
5 years ago
#3
(Original post by TeeEm)
Isn't IGCSE an all calculator GCSE?
yes, but knowing how to multiply two numbers is still useful.

(Original post by Warren092)
I'm taking the IGCSE Maths next year and I'am starting from the basics. At the moment I'm multiplying large numbers and there is one or two ways in doing this. One is with cross and vertical multiplication but I prefer the usual way does anyone else?
The usual way is best, unless you need to do some competitive fast multiplication.
0
5 years ago
#4
(Original post by tombayes)
yes, but knowing how to multiply two numbers is still useful.

The usual way is best, unless you need to do some competitive fast multiplication.
naturally i wholly agree with both of you.
How you choose to perform any arithmetical operation is a matter of personal choice rather than right or wrong and methods change according to teaching fashions. When I was your age log multiplication was the ONLY way, now from what I hear teacher prefer the grid method.
1
5 years ago
#5
(Original post by TeeEm)
naturally i wholly agree with both of you.
How you choose to perform any arithmetical operation is a matter of personal choice rather than right or wrong and methods change according to teaching fashions. When I was your age log multiplication was the ONLY way, now from what I hear teacher prefer the grid method.
Yes you are right! By usual I meant the method currently taught in UK primary/secondary schools (which of course may change), in comparison to the other methods taught in places like Kumon, etc.
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5 years ago
#6
(Original post by tombayes)
Yes you are right! By usual I meant the method currently taught in UK primary/secondary schools
Currently taught in my school

Standard Algorithm
Grid Method
Napier's Bones
Chinese Multiplication

We like to give options to students so that they can achieve their best
0
5 years ago
#7
(Original post by TenOfThem)
Currently taught in my school

Standard Algorithm
Grid Method
Napier's Bones
Chinese Multiplication

We like to give options to students so that they can achieve their best
I am impressed. My school never let us choose anything!
0
5 years ago
#8
(Original post by Warren092)
I'm taking the IGCSE Maths next year and I'am starting from the basics. At the moment I'm multiplying large numbers and there is one or two ways in doing this. One is with cross and vertical multiplication but I prefer the usual way does anyone else?
Might be worth checking out the Russian Peasant method of multiplication
1
5 years ago
#9
(Original post by Binary Freak)
Might be worth checking out the Russian Peasant method of multiplication
Appropriate that you mention this, given your name.
2
5 years ago
#10
This is bad. I only learnt one method of multiplication.
0
#11
I prefer the usual way it's a lot easier I'm doing maths because I was pants at it at school.
0
#12
Thank you everyone for your input
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