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+3
178
5
avatar+163 

What would the answer be to -

 

5 x 4 x 103

 

(I am confused to whether you do 5 x 4 first or you work out the whole answer and then the standard form)

( Either 9 x103 or 2 x 104)

PLEASE HELP

ipopsie  Mar 19, 2017
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5+0 Answers

 #1
avatar+26366 
0

5x4 is not 9 !!!

 

5x4x103 → 20x103 → 2x104

Alan  Mar 19, 2017
 #3
avatar+163 
+1

It's 20. I was looking at multiple questions at the same time :D

ipopsie  Mar 19, 2017
 #2
avatar+10657 
0

5 x 4 x 10^3  = 5 x 4 x 1000      you can do the multiplication in any order , the result will be the same

20,000   or  2 x 10^4

ElectricPavlov  Mar 19, 2017
edited by ElectricPavlov  Mar 19, 2017
 #4
avatar
0

Use PEMDAS (also known as PEDMAS, they stand for the same thing)

Parentheses

Exponents

Division and Multiplication from left to right

Addition and Subtraction from left to right

Using this,

 

5*4*10^3

5*4*1000

20*1000

20000
 

Guest Mar 19, 2017
 #5
avatar+52 
0

Just saying there is a big probability that I am wrong, but..

 

5x4=20

10 cubed =1,000

20x 1,000=20,000

 

P.S soz if it's wrong

Blowyourmind123  Mar 19, 2017

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