In the 2010, new york city marathon, 42,429 people finished the race and received a medal. before, the race, the medals had to be ordered. if you were the person to in charge of ordering the medals and estimated how many order by rounding, would you have ordered enough medal?

In the 2010, New York City Marathon, 42,429 people finished the race and received a medal.

If we round this to nearest thousand, we get 42,000, which is less than the number of winners.

If we round this to nearest ten thousand, we get 40,000, which is also less than the number of winners.

The midpoint is 45000, and 42,429 is less than the mid point, so in both cases, the values are rounding down.

Hence, with both the estimates, the number of medals will be less. So, I guess you will not have ordered enough medals.

the answer is 15% decrease

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.