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13y ago

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Continue Learning about Math & Arithmetic

How do know how much your currency and coins are worth?

For coins, you have to identify the type, denomination, date, mintmark and variety of each coin. Then you have to determine the condition, from Poor-0 to Mint State-70, according to ANA standards. With this information you can look up each coin in many price guides - for US coins, numismedia.com is a good online guide.


Which coins have a diameter with a five in the hundredths place?

Coins with a diameter that has a five in the hundredths place include the U.S. quarter, which has a diameter of 24.26 mm, and the U.S. half dollar, which has a diameter of 30.61 mm. Additionally, some foreign coins, like the Euro coin (both 1 and 2 Euro coins), also have diameters that fit this criterion. The specific measurement must be checked for each coin to confirm the five in the hundredths place.


How does dividing the coins into equal groups help solve the problem?

Dividing the coins into equal groups helps to simplify the problem by allowing for a clear visual representation of the total amount and making it easier to determine how many groups can be formed. This method facilitates calculations, such as finding the total number of coins or determining how many coins are needed to complete each group. Additionally, it helps identify patterns and relationships among the coins, which can lead to more efficient solutions. Overall, equal grouping reduces complexity and enhances understanding of the problem.


How do you find the value of old foreign coins?

Go to your local library and ask the reference librarian if they have any of the Krause guides to world coins. These are chock-full of pictures and variety listings. If you have coins from one of the major countries such as France, the U.K., Germany, etc. there are also many sites listing values. Try entering a list of terms such as "Germany coin value OR price" (without the quotes, of course) into one of the better search engines.


What does the term riddling mean when making coins?

Riddling in coin making refers to the process of sorting and separating coins based on their quality and characteristics. This typically involves inspecting the coins for defects, ensuring they meet specific standards before being released for circulation. The term can also apply to the removal of impurities or foreign materials from the coin blanks. Overall, riddling is a quality control step in the minting process.