Oh, what a happy little question! To estimate 650 divided by 8, you can round 650 down to 640. Then, divide 640 by 8, which is 80. This gives you a close estimate that is easier to work with mentally. Just remember, there are no mistakes in estimating, just happy little accidents!
It is not a requirement. However, it is easier to divide mentally if the denominator is a rational number.
25.4351
19
7.2771
4.625 is easier to read. If you divide the bottom number into the top number, you'll get the decimal.
6.9877
Diocletian divided the empire in order to make it easier to rule.Diocletian divided the empire in order to make it easier to rule.Diocletian divided the empire in order to make it easier to rule.Diocletian divided the empire in order to make it easier to rule.Diocletian divided the empire in order to make it easier to rule.Diocletian divided the empire in order to make it easier to rule.Diocletian divided the empire in order to make it easier to rule.Diocletian divided the empire in order to make it easier to rule.Diocletian divided the empire in order to make it easier to rule.
11
It is not a requirement. However, it is easier to divide mentally if the denominator is a rational number.
25.4351
4.9048
19
20.5
30
7.2771
Divide kph by 1.609 to get mph.(Same as you would do with kilometers to get miles.)Of course, you may find it easier to mentally multiplythe kph by 0.6214, which is the same operation, and for a ballpark figure you can use 0.62 for most speeds. Example : 80 kph is about 50 mph.
6.6184