you mean round?
you'd round it down to 6
anything that's on the right side of the decimal place that's over 5 gets rounded to the next whole number. if its less than 5 you round it down to the nearest whole number
The answer is 8.
300 + 60
330 + 60 = 390
300+60=360
64
80
30 x 0.6 = 18
64 = 8 x 8 81 = 9 x 9 so around 8.5
The front end estimate is 60. 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 63.5 to 1 trillion, I would estimate it as 0.If I had to add 63.5 to 0.0000000001, I would use the number as given, or possibly the front end estimate. If I had to divide it by 4, I would estimate it as 64, because 64/4 = 16. If I had to divide it by 5, I would estimate it as 65, because 65/5 = 13.
Square root 64 and square root 81
16 x 64 = 10241024 / 100 = 10.2410.24 x 85 = £870.40uk 15% tax
The front end estimate is 60. But estimating a single number, in isolation and without context is a complete waste of time. If I had to add 64.59 to 1 trillion, I would estimate it as 0. If I had to add 64.59 to 0.0000000001, I might use the number as given - not an estimate.Also, if I had to divide by 13, for example, I would estimate it as 65 since 65/13 = 5.If I had to divide by 16, I would use 64 because 64/16 = 4.