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$$n^a \times n^b=n^{a+b}$$

So $${{\mathtt{5}}}^{{\mathtt{3}}}{\mathtt{\,\times\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{{\mathtt{5}}}^{{\mathtt{4}}}{\mathtt{\,\times\,}}{{\mathtt{5}}}^{{\mathtt{2}}} = {{\mathtt{5}}}^{{\mathtt{3}}}{\mathtt{\,\times\,}}{{\mathtt{5}}}^{{\mathtt{1}}}{\mathtt{\,\times\,}}{{\mathtt{5}}}^{{\mathtt{4}}}{\mathtt{\,\times\,}}{{\mathtt{5}}}^{{\mathtt{2}}} = {{\mathtt{5}}}^{\left({\mathtt{3}}{\mathtt{\,\small\textbf+\,}}{\mathtt{1}}{\mathtt{\,\small\textbf+\,}}{\mathtt{4}}{\mathtt{\,\small\textbf+\,}}{\mathtt{2}}\right)} = {{\mathtt{5}}}^{{\mathtt{10}}} = {\mathtt{9\,765\,625}}$$

$${\mathtt{98}}{\mathtt{\,\times\,}}{\mathtt{97}} = {\mathtt{9\,506}}$$

What else can i learn

$$\frac{1}{2}+\frac{1}{2}=1$$

$$4\frac{1}{2}+4\frac{1}{2}=9$$

Yes!

$$\\\\\frac{1}{2}\\\\\frac{2}{5}$$

$$\\\frac{1}{2}\\\frac{2}{5}$$

ok Mg   

Now put \\ at the front of your first line to get rid of that unwanted indent 

Thank you,

but why didn't you write this on the intial thread   

It's ok everyone mistakes :)

It's the first time i spotted a mistake from melody, it's a miracle!

Joking.

$$\frac{1}{2}\\\frac{2}{5}$$

Thanks Alan and anon - I still trip up on these.    

Thanks MG :)

Yep, a small difference changes everything.

In box two at the top there are 4 cut squares.

but in figure 2  there are only 3 cut square in box 2.

$${\frac{{{\mathtt{10}}}^{{\mathtt{5}}}}{{\left({{\mathtt{3}}}^{{\mathtt{2}}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{-{\mathtt{2}}}\right)}^{{\mathtt{3}}}}}$$

$$\\=\frac{10^5}{3^6\times 10^-6}\\\\
=\frac{10^{5--6}}{3^6}\\\\
=\frac{10^{11}}{3^6}$$

I think this question should be on todays wrap!

it means  

  $$2.5\times 10^2 = 2.5\times 100=250$$

That was great. 

I read everything including answers, very interesting!

28C8

$${\left({\frac{{\mathtt{28}}{!}}{{\mathtt{8}}{!}{\mathtt{\,\times\,}}({\mathtt{28}}{\mathtt{\,-\,}}{\mathtt{8}}){!}}}\right)} = {\mathtt{3\,108\,105}}$$

So I did, I am sorry they are meant to be back slashes - I shall go back and fix that post :(

28!

$${\mathtt{28}}{!} = {\mathtt{304\,888\,344\,611\,713\,860\,501\,504\,000\,000}}$$

Anon, your answer is not correct :(

But you said to skip lines use forward slashes.?

What calc?

On the web2 calc you can do it like this

log(225)-3log(12)/log(12)

$${log}_{10}\left({\mathtt{225}}\right){\mathtt{\,-\,}}{\frac{{\mathtt{3}}{\mathtt{\,\times\,}}{log}_{10}\left({\mathtt{12}}\right)}{{log}_{10}\left({\mathtt{12}}\right)}} = -{\mathtt{0.647\: \!817\: \!481\: \!888\: \!637\: \!3}}$$

MG, one of your main problems is that you are using  forward slashes// instead of back slashes\\

One minute of arc is 1/60 of 1°

One second of arc is 1/60 of one minute of arc, or 1/3600 of 1°.

$$\frac{1}{2}//\frac{2}{5}$$

$$$ I didnt $$$know that$$$ Melody!

i don't know rosala,  I do not fully understand what the $ does.

the only time I have ever used a $ for is if I want text.

See this

\\I want this in text\\  

$I want this in text$

$$\\I want this in text\\
$I want this in text$$$

The \\ at the very beginning stopped the first line from being indented.

The \\ at the end of the first line caused a line break.

When i enclosed the text in $ signs it made it display as text.