Rena knows a dollar coin has a mass if a little less than 10 grams. She estimates 1 kilogram of coins would be worth more than a million dollars. Is this reasonable? Explain
No, Rena's estimate is not reasonable. To calculate the value of 1 kilogram of coins, we need to convert the mass from kilograms to grams (1 kilogram = 1000 grams) and then divide by the mass of one dollar coin (10 grams) to find the number of coins.
1 kilogram = 1000 grams
1000 grams / 10 grams per coin = 100 coins
Therefore, 1 kilogram of coins would be equal to 100 dollar coins, which is equal to $100, not more than a million dollars as Rena estimated.