Learning to count

Number Theory Level 1

Evaluate

3 × 1 0 2 + 4 × 1 0 1 + 5 × 1 0 0 . 3 \times 10^2 + 4 \times 10 ^ 1 + 5 \times 10^ 0.


The answer is 345.

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Arron Kau by Arron Kau

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7 solutions

Shivam Gulati
Sep 15, 2013

3x10x10+4x10+5x1 =300+40+5 So, answer is 345.

3 Helpful 0 Interesting 0 Brilliant 0 Confused
Fahad Usman
Sep 16, 2013

it is so easy... we can also write the question as: 300+40+5= 345

2 Helpful 0 Interesting 0 Brilliant 0 Confused

Moderator note:

Indeed. This is a fancy way of expressing 345 in base 10.

One does not simply.... say a math problem is easy

Jeremy Lu - 7 years, 8 months ago
Gustavo Henrique
Sep 15, 2013

3x10² + 4x10¹ + 5x10'0 Primeiro fazemos as potências ->

3x100 + 4x10 + 5x1 Lembre-se que todo número elevado a 1 é ele mesmo e que todo número elevado a 0 é 1! Agora multiplicamos ->

300 + 40 + 5 Agora é fácil não é? Somamos

345 =D

Obrigado!

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Zi Song Yeoh
Sep 27, 2013

This is just 345 345 written in base 10 10 .

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Aakash Parkash
Sep 20, 2013

First we have to solve power then multiplication and in the last addition so =>3 x 100 + 4 X 10 +5 x 1 (5^0=1) =>300+40+7 =>347

0 Helpful 0 Interesting 0 Brilliant 0 Confused

That's not the right answer though… :P

Tim Vermeulen - 7 years, 8 months ago
Jamod Johnson
Sep 20, 2013

I put it in the caluculator

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Waqas Gondal
Sep 20, 2013

Use the formula DMAS (divide, multiply, add and then subtract) for such problems -Waqas Haider https://www.facebook.com/waqas.h.gondal

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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