while reading through magic items to decide what to give my players, i realized that the +1/etc weapons are phrased as such:

"You have a +1 to attack and damage rolls with this magic weapon."

so, for example, if i had a +1 greatsword, which deals 2d6 damage, i would be dealing an extra two damage--a +1 for each damage roll.

am i interpreting this wrong?

 (edited for a typo)

Yes you're interpreting it wrong. It just adds 1 to the 'to hit' modifier and 1 to the 'damage' modifier over what you would normally add. It's not 1 per die roll.

Lets say your normal greatsword attack would be 1d20+7 to hit (+4 from strength and +3 from proficiency) and 2d6+4 to damage. It would become 1d20+8 to hit and 2d6+5 to damage.

thanks, i kinda figured that's what it was supposed to mean, but for someone who takes written work quite literally, i couldn't be sure. even the way you've corrected me proves my point a little bit? "it's not 1 per die roll" --that's exactly how it's worded though; "damage roll" and "die roll" in this particular context of d&d are basically synonyms. 

not trying to be pedantic or annoying, just explaining myself.

When it comes to magic range weapons and magic ammunition, are the magic bonuses added or just use the higher number? Can you tell me where to find the rule?

Quote from Gilthanous >>

When it comes to magic range weapons and magic ammunition, are the magic bonuses added or just use the higher number? Can you tell me where to find the rule?

 

Since magic ammunition is single-use, you might allow them to stack with the weapon's bonus.

Quote from Gilthanous >>

When it comes to magic range weapons and magic ammunition, are the magic bonuses added or just use the higher number? Can you tell me where to find the rule?

 Yes, they are 100% intended to stack. If you fire a +3 Arrow using a +3 Longbow, you will benefit from the total +6 to both Attack and Damage rolls.

Quote from IamSposta >>

Quote from Gilthanous >>

When it comes to magic range weapons and magic ammunition, are the magic bonuses added or just use the higher number? Can you tell me where to find the rule?

 Yes, they are 100% intended to stack. If you fire a +3 Arrow using a +3 Longbow, you will benefit from the total +6 to both Attack and Damage rolls.

This, 100%.

Weapons & ammunition are distinct items, and may each be enchanted with magical effects. They are used together, so their bonuses are additive.

The relevant section to look for rules is Ch 19: Magic Items, Wearing and Wielding Items.

Weapon, +1 & Ammunition, +1 are not the same item, so they do not run afoul of "multiple items of the same kind".

Weapon, +1 & Ammunition, +1 are used together, but they are not paired items. You can have a magic bow without magic arrows (or vice versa), and that doesn't change how either item functions.

Worth noting is that you can also have other items such as the Bracers of Archery on top of magical weapons & ammo.

Thanks all, I was just trying to prove an argument. And you all gave me my ammo needed. plus I found the PH Errata.pdf. The other party was trying to use the combining magical effects rule.