31.8321
30 x 0.6 = 18
28 ÷ 4 = 736 ÷ 4 = 9
0.0676
28/42 divide both by 2 = 14/21 divide both by 7 = 2/3
31.8321
571 divide by 28 = 20.392857142857142
The front end estimate is 30. But estimating a single number, in isolation and without context, is a complete waste of time. It all comes down to the context of what needs to be done with the number.If I had to add 28.125 to 1 trillion, I would estimate it as 0.If I had to add 28.125 to 0.0000000001, I would use the number as given, or possibly the front end estimate. If I had to divide it by 7, I would estimate it as 28, because 28/7=4. If I had to divide it by 10, I would estimate it as 30, because 30/10 = 3.
62 divide by 28 = 2.2142857142857144
30 x 0.6 = 18
28
These are the numbers that divide into 28 evenly: 1, 2, 4, 7, 14, 28.
The front end estimate is 3000. But estimating a single number, in isolation and without context, is a complete waste of time. It all comes down to the context of what needs to be done with the number.If I had to add 2864 to 1 trillion, I would estimate it as 0.If I had to add 2864 to 0.0000000001, I would use the number as given, or possibly the front end estimate. If I had to divide it by 28, I would estimate it as 2856, because 2864/28 = 102. If I had to divide it by 10, I would estimate it as 2860, because 2860/10 = 286.
28
28 ÷ 4 = 736 ÷ 4 = 9
0.5714
0.08