Answer :
7 9/12 = 7.75
2 11/12 = 2.917
So we can round both of these up.
7.75 rounds to 8
2.917 rounds to 3
8 + 3 = 11
So the estimated sum is 11.
7 9/12 + 2 11/12 = 10 2/3
So the actual sum is 10 2/3.
The estimated sum is a pretty good estimate to the original number.
2 11/12 = 2.917
So we can round both of these up.
7.75 rounds to 8
2.917 rounds to 3
8 + 3 = 11
So the estimated sum is 11.
7 9/12 + 2 11/12 = 10 2/3
So the actual sum is 10 2/3.
The estimated sum is a pretty good estimate to the original number.
7 9/12 + 2 11/12
((12*7)+9)/12+((12*2)+11)/12
93/12+35/12
128/12 divide by 2
(128/2)/(12/2)
64/6 divide by 2
(64/2)/(6/2)
32/3
10 2/3
((12*7)+9)/12+((12*2)+11)/12
93/12+35/12
128/12 divide by 2
(128/2)/(12/2)
64/6 divide by 2
(64/2)/(6/2)
32/3
10 2/3
