No, unfortunatly it's not proper grammar. Instead of saying, "I want five!", it would be more clear if you identified what the thing is you're counting. "I have five cookies!" would make more sense.
A quotient or a ratio. It would help to have a proper question instead of a half formed sentence with a question mark stuck at the end!
Yes, you mark the end of a sentence in the same way.
What is the page number listed at the end of the glossary entry
If it is at the end of a sentence then yes however if not then no
Put a equal sign at the end
According to proper English grammar, no. "With" is a preposition. You aren't supposed to end a sentence with a preposition.
Yes. For example, What did she point at ? However, do not use 'at' with 'where.'
"Thank you." is considered a sentence in itself with the subject being the understood pronoun "I."
This is a specific case of the misconception that sentences should not end with prepositions, or even more generally, the false prohibition on prepositional stranding. In short, yes, it isproper grammar to end a sentence with a preposition if everything else about the sentence is correct. Others disagree but they are wrong. Every modern grammar text agrees that there is nothing at all wrong with preposition stranding. What is wrong, according the Cambridge Grammar of the English Language, is to rearrange a sentence, to a form that is difficult to read or understand, in an effort to avoid preposition stranding.For a more in-depth answer, including the other side of the argument, see "Is it proper grammar to end a sentence with a preposition?". However, much of the debate has been moved to the "Discussion" page.
No it is not proper to end a sentence with the word "from" as it's considererd a prepostition. For example, the proper way to ask the question, "Where do you come from" is "from where do you come." May sound a bit odd, but it's the correct way to ask the question. As a general rule, if you're ending a sentence with the word from, correct it by simply moving from the end of the sentence to the beginning.
It may be. There is no word in English that cannot begin or end a sentence. The idea that certain word are unfit to end a sentence comes from Latin grammar, not English.
This would depend on who you ask. In most schools, a teacher would tell you NOT to end a sentence with 'since' because it is a preposition. However, it is perfectly acceptable to end a sentence with a preposition, such as 'since', if the alternative would create confusion. With this being said, you should stay away of doing this and find a better alternative.
In proper English usage you do not end a sentence in a preposition, so at should not end the sentence Where is Jasmine is sufficient.
It has always been proper to end an English sentence with a preposition. The utterly false rule about not ending a sentence with a preposition comes from an ill-starred attempt to make English conform to the rules of Latin grammar, where a sentence may not end with a preposition. English is not Latin: we can end a sentence with a preposition IF WE WANT TO. Winston Churchill said that the Victorian grammarians' diktat that a sentence must not end with a preposition " . . . is a restriction up with which I will not put".
"He tours the house" is a grammatically proper sentence, but it would normally include an adverb of repetitious time, such as "frequently", at the end of the sentence as given. If the reference is to a single incident, it could be expressed more idiomatically in the present progressive tense as "He is touring the house."
NEVER
Not if it is to be a proper sentence.