# Help meWatch

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#1
i need help on
Standard Form & Estimation
Last edited by 17holmelou dene; 4 weeks ago
0
4 weeks ago
#2
what parts about it are you struggling with?
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#3
standard form
0
4 weeks ago
#4
(Original post by 17holmelou dene)
standard form
You need to post a question or something that we can help with. Otherwise I'm not sure what kind of response you're expecting?
0
4 weeks ago
#5
(Original post by Sir Cumference)
You need to post a question or something that we can help with. Otherwise I'm not sure what kind of response you're expecting?
i think they want you give examples, go through the rules etc
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4 weeks ago
#6
(Original post by 1st superstar)
i think they want you give examples, go through the rules etc
I'll leave that to you then
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4 weeks ago
#7
(Original post by Sir Cumference)
I'll leave that to you then
nah won't/can't be bothered to explain lmao (not good at Maths anyone)
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4 weeks ago
#8
standard form: let’s say you are asked to multiply
2.1 x 10^3 and 4.5 x 10^4

So 2.1 x 10^3 really means 2100. “Standard form” is the way the number has been shown like in my example, and it means that the first number (2.1) can’t be higher than 10. So if you are asked to change 2100 to standard form, you move the decimal place (which is at the end of 2100, like 2100.000) back until the number is less than 10, so 2.1. Since we’ve moved the decimal back 3 places, it becomes x 10^3. If the number was x 10^-3, this means the original number was back 3 places instead of forward 3, so in our example it would be .0021

So back to the question, just change the numbers into normal numbers so 2100 and 45000 (moved decimal forward 4) and multiply, then change your answer into standard form.

Hope this helps
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