Sunday, October 11, 2009

Binesi's Coin Math for October 11th 2009

Would the jar look the same if it was Canadian money?

No, because American currency is worth more than Canadian currency.
Right now the American dollar would exchange to $1.04 in Canadian currency. While the Canadian dollar in American is worth 0.96 cents. So if you changed the American currency to Canadian then you would have more in the jar. You would have $104.24 in Canadian.

What is the biggest coin?

The biggest coin is probably an American quarter. Although if you were talking about Canadian currency it would have to be the toonie. This goes for both size of coin and value of coin.

Part 2

If you were to add together all of the coins in this jar how many coins would you get?

For American money it could come up to around this:

1¢ (50¢ rolls) = $2 (4 rolls of pennies)
5¢ ($2 rolls) = $8 (4 rolls of nickels)
10¢ ($5 rolls) = $50 (10 rolls of dimes)
25¢ ($10 rolls)= $40 (4 rolls of quarters)

After all that we have to figure out how many coins are in the jar:

We take the number of coins in 1 roll then multiply it by the number of rolls we used.

1¢ has 50¢ worth of pennies in 1 roll, so we multiply that by the number of rolls used.
so. . .
50 x 4= 200
40 x 4= 160
50 x 10= 500
40 x 4= 160

The total number of coins in the American Jar is 1 020 coins.

If we redid this problem with Canadian coins we would have a lot less coins in the jar:

1¢ (50¢) = $1 (2 rolls)
5¢ ($2) = $4 (2 rolls)
10¢ ($5) = $10 (2 rolls)
25¢ ($10)= $10 (1 roll)
$1 ($25) = $25 (1 roll)
$2 ($50) = $50 (1 roll)

50 x 2 = 100
40 x 2 = 80
50 x 2 = 100
40 x 1 = 40
25 x 1 = 25
25 x 1 = 25

The total value of coins in the Canadian jar is 370 coins, a lot less than the American jar. So I think the Canadian jar would be about one quarter full.

3 comments:

abby 8-73 said...

Good Job Binesi!! (:
I like how you explain your answer!! (:
Great Job!! (:

Ronny 816 said...

very nice job on the first question but the second question just one sentence which made the polar bears cry

Binesi8-17 said...

what?
I made the polar bears cry?
I guess thats your way of saying my explanation wasn't done well?

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