Deflation
Exchange rate considering the 45 cents is another country's currency and the dollar is referring to say the US dollar.
Inflation
In all countries that use dollars and cents as their currency, $1 = 100 cents, so 45¢ = 45/100 of a dollar, or 45%.
It means: "...compared to the value it had a certain number of years ago". So back then you could buy an item for 45 cents that you now would have to pay a dollar for.
$1 = 100 cents → 45 cents/$1 = 45 cents/100 cents = 45/100 = 9/20
45 cents
There are 100 cents in one dollar. Therefore, nine twentieths of a dollar is equal to 9/20 x 100 = 45 cents.
The 1943 steel cents are worth about 10 cents in circulated condition, or upwards of a dollar if it still has the original zinc coating. Then the '44 and '45 pennies are worth around 3 cents each. They're old, but not rare or valuable.
45 cents 1 nickel is 5 cents 9 x 5 = 45
045 cents is equivalent to 45 cents. In monetary terms, it represents a fractional value of a dollar, specifically 0.45 dollars or 45/100 of a dollar. This amount can be used in transactions or as a measure of currency.
You can do this with 45 pennies (45 cents) one quarter (25 cents) 2 dimes (20 cents) and 2 nickels (10 cents). 45 + 25 + 20 + 10 = 100
As of today 45/100 of a dollar or 45 cents