Question

Please help. WILL MEDAL! Use the letter d and the number 100 as required to write an expression that tells the number of 3-cent stamps that can be purchased for d dollars. @jim_thompson5910 @sleepyjess @triciaal @hartnn

Answer 1

If you have d dollars, how many cents do you have?

Answer 2

100d cents

Answer 3

Correct.
How many 3-cent stamps can you buy with 100d cents?

Answer 4

I'm not sure.

Answer 5

OK. Let's start with examples that will lead to an answer.
Let's say you have 3 cents.
How many 3-cent stamps can you buy with 3 cents?

Answer 6

1

Answer 7

Good.
Now think of what operation do you do to 3 cents (you have) and 3 cents (cost of stamp) that gives you an answer of 1?
What operation do you do to 3 and 3 to get 1 as an answer?

Answer 8

Division

Answer 9

Excellent.
Let's see if the same operation will work for other examples.
With 6 cents, you can buy 2 3-cent stamps.
6/3 = 2
With 12 cents, you can buy 4 3-cent stamps.
12/3 = 4
As you can see, division works in all these examples.

Answer 10

I see.

Answer 11

Is it \[\frac{ 100d }{ 3 } stamps\]

Answer 12

In every case above, we divided the amount of money we have by the cost of 1 stamp (3 cents in this case).
You can expect that division will work for all examples.
If you have 100d cents, how many 3-cent stamps can you buy?
Divide the amount of money you have by the cost of 1 stamp.
What do you get?

Answer 13

Correct.

Answer 14

Good job!

Answer 15

Thank you for your help.

Answer 16

You're welcome.