Answer is below. Look at my explanation to understand my answer.
To convert centimetres into meters, you'll divide how many centimetres by 100.
With that being said...
674 ÷ 100 = 6.74
Hence, 6.74 is your answer.
Let me know of any questions or concerns.
All the equivalent fractions.
I'm fairly certain that's correct but check again if you need to and please, correct me if I got something wrong.
13.984 rounded to the nearest tenth is 14
.984 is closer to 1 than to .9, so we have to round up.
Equation: 
Since there aren't any like terms and it can't be factored, your answer would be:

Hope this answer helped you!
25%
Divide 12 by 3 and you'll get 4.
That means 1/4 or a quarter of the 12 is 3.
(Convert the fraction to its percentage form)
1/4 or 1 divided by 4 equals 0.25
Multiply 0.25 by 100 and you'll get 25%