# Thread: base 5, 6, 7 etc mult charts

1. ## base 5, 6, 7 etc mult charts

I need help understanding how to build base 5, 6, 7 etc multiplication charts

3. ## Re: base 5, 6, 7 etc mult charts

$base \1 \ (binary) \ \implies \ 0,1,10,11,100,101,110,111,1000, \ to \ eight \ in \ base \ 10.$

$base \ 5 \ \implies \ 0,1,2,3,4,10,11,12,13,14,20,21,22,23,24,30,... \ to \ 15 \ in \ base \ 10.$

$The \ rest \ should \ be \ self-explanatory.$

4. ## Re: base 5, 6, 7 etc mult charts

Hello, kelly2000!

I need help understanding how to build base 5, 6, 7 etc multiplication charts.

Exactly what don't you understand?

If you know how to write numbers in base-five, just construct the multiplication chart.

For example: .$3_5 \times 4_5 \:=\:22_5$

Then we have:

. . $\begin{array}{c||c|c|c|c|c||} \times & 0 & 1 & 2 & 3 & 4 \\ \hline \hline 0 & 0 & 0 & 0 & 0 & 0 \\ \hline 1 & 0 & 1 & 2 & 3 & 4 \\ \hline 2 & 0 & 2 & 4 & 11 & 13 \\ \hline 3 & 0 & 3 & 11 & 14 & 22 \\ \hline 4 ^& 0 & 4 & 13 & 22 & 31 \\ \hline\end{array}$

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