157.93 plus 104.52 = 262.45Rounding to the nearest hundred this becomes 300. Rounding to the nearest ten this becomes 260.In this instance rounding to the nearest ten is more reasonable.
sum just means add and 100 and 100 when added together is 200.
The sum of the integers from 1 to 100 inclusive is 5,050.
The idea is to round each of the numbers - in this case to the nearest multiple of 10 - then do the addition in your head.
n*(n+1)=sum 100*(100+1)=10100
The two candidates are 300 and 400 300 is a "distance" of 49 away 400 is a "distance" of 51 away So 300 is the nearest 100.
hi
1371.58 * ( ( 100 - 15 ) / 100 ) = 1165.843
106 + 091 = 197 100 + 100 = 200 Answer: 3
You do not need a conjecture; you can calculate the answer. The answer is 10,100
The answer is the 100th triangular number so you can use the formula (n(n+1))/2.n = 100 so the sum is (100 x 101)/2 = 10100/2 = 5,050.
Add them all together then divide the sum by 100 (move the decimal point two places to the left).
157.93 plus 104.52 = 262.45Rounding to the nearest hundred this becomes 300. Rounding to the nearest ten this becomes 260.In this instance rounding to the nearest ten is more reasonable.
The sum of 328 rounded to the nearest hundred is 300.
No reason. The nearest ten will be closer to the actual sum.
You can round 98 up to the nearest ten, giving you 100, and 32 down to the nearest 10, giving you 30.This sum would make 100 x 30, which is 3000, just 136 shy of the actual answer.
I suggest you use the formula for an arithmetic series to calculate that.