Total production of 2010 U.S. dimes was 1,120,689,364 this includes clad & silver proof coins.
A pound of silver coins is about $500.00
The 1944 Mercury dime was issued from all three US Mints.
The 1965 Kennedy half dollar is a 40% silver coin (1965-1969) but so many were made only a very high grade uncirculated example is worth more than the silver in the coin. The silver value today is about $2.70
Go to www.kitco.com for spot silver prices. Spot silver prices only tell you the melt value of the coin. Many - but by no means all - pre-1965 (not pre-'63) silver coins are worth much more as collectibles than as bullion. You have to know the coins' dates, mint marks, and conditions to make any determination of their collector value. You can find price guides at many locations; one good one is www.Numismedia.com
Pre-1965 dimes are 90% silver & 10% copper. The Actual Silver Weight (ASW) is .07234oz of pure silver.
A pre-1965 dime contains 2.5 grams of silver. However, dimes minted after 1965 are made of copper and nickel, and contain no silver.
An pre-1965 U.S. dime weighs 2.5 grams total. The silver content of pre-1965 dimes, quarters, halves, and silver dollars is 90% silver by weight, so there is 2.25 grams of silver in an unworn, uncirculated pre-1965 U.S. dime.
$5 or 50 dimes
Assuming you're referring it US dimes, it depends on their dates. Dimes made since 1965 weigh 2.27 gm each and a pound is 453.6 gm so it would take 453.6 / 2.27 = 200 modern dimes. Older dimes weighed 2.5 gm so it would take 453.6 / 2.5 = 181.5 (approximately)
The British pound is worth slightly less than the American dollar. Therefore, a pound is only worth about 6.2 American dimes. If you are talking weight, it takes about 200 dimes to weigh a pound.
A bit less than 14 dimes makes a troy ounce of silver.
100 silver U.S. dimes make up 7.23 troy ounces of silver.
A few 1965 dimes were accidentally struck on silver blanks left from production of 1964-dated coins, in much the same way that the famous 1943 copper pennies were made by accident. No one knows exactly how many were made and none have been found in many years. The standard composition for all circulation-strike dimes dated 1965 and later is the same cupronickel-clad "sandwich" also used for quarters and halves. 1964 is the last year that Roosevelt dimes were 90% silver. From 1965 to 1967 coins were made without mint marks as a way of supposedly easing the coin shortage that resulted when older silver coins were withdrawn for melting. As a result production figures were not broken down by mint mark. The only figure available is a combined total - 1,652,140,570.
It appears as though there were 620,684 silver Roosevelt Dimes minted in 2008. All of these silver dimes are proof and available only in the 2008 Silver Proof set.
$5 or 50 dimes
A dime minted in 1965 or later weighs 2.27 gm and there are 453.6 gm to a pound, so go from there. Please note that this site has a Coins and Currency thread that's better suited to questions about, well, coins and currency. "Money and Credit" is for financial matters like checking accounts, credit cards, etc. There are 200 dimes in a pound