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# Decimal places watch

1. right I haven't done decimal places in a long time and something someone said to me sorta threw me off. but id just like to confirm it. so I have an answer of 4408.96 to a question and it wants it to 1.d.p. so therefore the answer is 4409.0 (1.d.p) or is it 4409?
I thought with decimal places it always has to involve adecimal hence the name. so in this case when we do it to 1.d.p 6 is bigger than 5 and 9 increase by 1 to 10. and 1 gets added on to 4408 to make 4409, so final answer is 4409.0 so is that right?
Also what would 1) 356.87676 be to 3 significant figures? 4 significant figures? And 5 significant figures?and what would 2) 456.289 be to 3 significant figures? and finally what would 3) 679.9756 be to 3.s.f?

This is all basic stuff which I did back in yr6 lol but whenu spend ages with stuff like logs in a level maths and chem, I've had a slip ofmind.

2. 4409.0 is right.

3. ok so for 1) 357 (3.s.f) 356.9 (4.s.f) 356.88 (5.s.f)2) 456 (3.s.f)
3) 680 (3.s.f)
4. (Original post by ryanj18)
ok so for 1) 357 (3.s.f) 356.9 (4.s.f) 356.88 (5.s.f)2) 456 (3.s.f)
3) 680 (3.s.f)
I can't remember but I'm pretty sure that's all correct.
5. (Original post by ryanj18)
ok so for 1) 357 (3.s.f) 356.9 (4.s.f) 356.88 (5.s.f)2) 456 (3.s.f)
3) 680 (3.s.f)
Correct

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