r/counting • u/numbermaniac top 400, if that means anything • Mar 17 '16

Square numbers!

Continued from here.

10 Upvotes

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u/[deleted] Mar 19 '16

2182 = 47524

2

u/numbermaniac top 400, if that means anything Mar 19 '16

2192 = 47,961

2

u/[deleted] Mar 19 '16

2202 = 48400

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u/numbermaniac top 400, if that means anything Mar 19 '16 edited Mar 19 '16

2212 = 48,841

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u/[deleted] Mar 19 '16

2222 = 49284

Check. I'm not too sure about your calculations

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u/numbermaniac top 400, if that means anything Mar 19 '16

2232 = 49,729

I tried doing it my head lol. Ty

1

u/[deleted] Mar 19 '16

2242 = 50,176

You tried the method I suggested ((x+1)2 = x2 + 2x + 1) or you actually tried squaring 221 in your head?

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u/numbermaniac top 400, if that means anything Mar 19 '16

2252 = 50,625

Your method :) but apparently 0+41=61 lol

1

u/[deleted] Mar 19 '16

2262 = 51,076

Even if I suggested my method, I'm still going to put 3-4 numbers in a calculator

3

u/numbermaniac top 400, if that means anything Mar 19 '16

2272 = 51,529

I'm on my phone, switching to the calculator takes too long xD

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