#1-Four Coins = 83 Cents
In Cheesie Mack Is Not a Genius or Anything, my grandfather Gumpy gave me a math problem while he was tapping his fingers together. Here’s what it was:
“Let’s say (tap, tap) there’s eighty-three cents in my pocket,” he said. “What’s the fewest number of coins I could have?”
“United States coins?” I asked.
He nodded (tap, tap).
I thought for a few seconds and answered, “Four.”
His forehead wrinkled up like he was surprised at me. “Nope. Six. A half-dollar, a quarter, a nickel, and three pennies.”
But I proved I was right . . . and he was amazed.
Did you figure it out?
Most kids think the correct answer is seven: three quarters, a nickel, and three pennies.
But that’s wrong because most kids don’t even think about a half dollar because they usually never see one. (I can’t remember the last time I held a half dollar!) But Gumpy knew about half dollars. That’s why he thought the answer was six.
So why is the correct answer four coins? Because in the 19th Century—at two different times, 1851-1873 and 1865-1889—the United States minted three-cent coins. I learned that when I was researching the 1909 Lincoln Cent that Georgie and I found in his basement.
I have never seen a three-cent coin for real.
If you want to try to puzzle your family and friends with questions like this, you need to know that the United States also had twenty-cent, two-cent, and half-cent coins.
* * * * *
Update: Look what I got in the mail!
Here’s what was in the letter. I made the image much, much larger so the details are visible. You can see that it’s not the same as the three-cent coin above. The USA made two different designs in the 19th century. And now I actually own one. How cool is that?!
Love seeing my son who’s 11 actually reading a book. Such a nice change from all the technology! Thank you 🙂
How do you make exactly 83 cents using 20 coins without using quarters
16 nickels, 2 pennies, and 2 half-cents = 20 coins.
At first I thought it looked like an Oreo Cookie
You would break a tooth if you bit it.
i like your books it helps me
how many coins make 83 cents pls i need to lean it halp me
Just read what I wrote above. The answer is right there!
Thank you. you are nice to people. and pls i like the way you spell my name
Oh no! I misspelled your name and you were really nice about it! Sorry, Christiana!
I’m from Pritchett and WHOA!
Your books are so amazing,extraordinary,and epic. I remember when you came to Pritchett school i loved the story about the mad man and you dragged a guys arm 😀
I hope you had a good time when you were carrying Stacey in the picture yay!
Pritchett ROCKS! I had a great time at your school.
hi Cheesie Mack I love all of your awesome books I am reading all of them. I want to be a writer one day maybe you can give me advice about it since you write awesome books and everyone loves them.I love how you also use educational things in the book too ( I love learning I call myself a nerd and I am proud of it) I am in fourth grade and live in Dumont new jersey.i home you can tell me some advice about becoming a writer but if you can not that’s fine.
You already are a good writer. I can tell that from your comment. The best advice I can give is to practice. You should write something (it doesn’t matter what) everyday. It’s just like soccer or piano playing. The more you do it, the better you get.
I love your books!! They are soooooooooooooooo awesome!! My friend, Frosting loves these books too. Anyway, I would love it if you wrote 200 more books. Frosting’s name is actually Callie. Do you remember when you visited our school? If you don’t remember the name of our school, your grandson goes there. Callie just told me that because of my email address, you know that your grandson goes there (unless you are like the average grandparent who doesn’t remember things that often). Just to let you know, my mom has a 1885 half dollar (she’s not trading it out for anything. It was her mom’s).
Your school rocks!
Where did you find that coin.i love your books!!!
Thank, Cheesie Fan (Isabella). If you’re asking about the three-cent coin with the hole in it…someone named Andy mailed it to me.
you are smart. wats ur real name?
Ronald Apton Mack. You can see my whole family tree here.
amazing knew about half dollar but not the rest!!!!
Coins are neat, huh?
Yes they are
That is sooo intercool!!! I never knew there was a 3 cent coin!1
It is sOoOoOoOo col
I <3 your books!!!!!!!!!!!!!
Dear Cheesie Mack,I think your books are great and I think I have another hint to the problem in book one your Grumpy gave you, he was tapping his fingers four times and that is what I thought before I came to your website for the first time. I also think you should have some games on this site because sometimes I might want to see what you look like and what your life is like. How come you invite yourself over to eat? I think that tuna fish sandwiches are delious.
Your favorite reader,
P.S eat your corn
Games are hard to make.
Don’t forget to eat your corn🌽🌽🌽🌽
I like games, too. But they are hard to make.
Omg ily and your books. Theyre so funny! Keep writing!
I definitely will. Thanks, Rebecca!
hi i found a coin in a big box at my nonnies house andit was from either from 18161 or 1863 sorry i dont have a picture of it but when i get one ill show you and actully yu visited my school today,Christa McAuliffe it wa very fun thank you
Your coin could be very valuable.
Hi, Cheesie! I really like your splenderful (splendid plus wonderful) first book! I found two pennies! (or Lincon cents!) I tried to look closely at them, and guess what I saw! A very tiny VDB! I know that you (or maybe Glenora Jean Prott) said in your first book, Cheesie Mack is Not a Genius or Anything, That those coins are very valuable! But they look kind of rusted. Should I keep them or sell them?
Lucky you! I would take them to a coin dealer and find out what they are worth. Then make up my mind.
Hey,Cheesie, my sister has 10 half-dollar coins! By the way, she has a messed up room! Also at my school we take AR tests, on books, and I made 100% on my test I made on your book! My sister likes you, and she’s in 6th grade, plus you live all the way up in Massachusetts!(I don’t remember when you told me, but I don’t know where you live. I spelled Massachusetts right the 1st time!) And my cat just blooped(mixture of bloped and pooped, I don’t really know why my sister thought of that) on my foot and now it is numb.
That is a very interested comment about LOTS of things.
That’s so cool that ‘Andy’ (I think) sent that to you!
Yeah. I love it!