65 - 9 = 56
It is 5 + 4 = 9.
Their average is 22 and their difference is 9 so use 22 and 9 13*31 = 222 - 92 = 484 - 81 = 403
9 + 63 = 72 lbs.
The front end estimate is 100. But estimating a single number, in isolation and without context, is a complete waste of time. If I had to add 117 to 1 trillion, I would estimate it as 0. If I had to add 117 to 0.0000000001, I would use the number as given - not use an estimate.Also, if I had to divided the number by 13 I would use 117 since 117/13 = 9 but if I had to divided it by 24 I might estimate it as 120 because 120/24 = 5.
65 - 9 = 56
9X60
It is 5 + 4 = 9.
8/11 + 3/9 8/11 + 3/9
9+63+863+9
The estimated answer is 20.
Their average is 22 and their difference is 9 so use 22 and 9 13*31 = 222 - 92 = 484 - 81 = 403
9 + 63 = 72 lbs.
If you are rounding to the 9 on the right, the number stays the way it is. If you are rounding to the 9 on the left, it rounds to 489000000
If you are rounding to the 9 on the right, the number stays the way it is. If you are rounding to the 9 on the left, it rounds to 489000000
If you are rounding to the 9 on the right, the number stays the way it is. If you are rounding to the 9 on the left, it rounds to 489000000
If you are rounding to the 9 on the right, the number stays the way it is. If you are rounding to the 9 on the left, it rounds to 489000000